Library of the Marine Corps
3000224054
C-NVA EMPLOYMENT
OF
MINES & BOOBY TRAPS
• ••••••••
TECH INTEL BRANCH
COMBINED INTELLIGENCE CENTER, VIETNAM
• ••••••••
MACV P-3300/5
JS.' 4c.^
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n
^*^ Ih '^0^^
HEADQUARTERS
UNITED STATES MILITARY ASSISTANCE COMMAND, VIETNAM
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MACJ28 1 June 1967
SUBJECT: Mines and Boobytraps Used by the Viet Cong in South Vietnam
TO:
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!• Forwarded for your information is a revised and enlarged edition
of a handbook on Viet Cong mines and boobytraps used in South Vietnamo
2o The purpose of this publication is to save lives and preserve
equipmento Mines and boobytraps have exacted a heavy toll of lives and
property in Vietnamo Many of these casualties could have been prevented
through proper care and caution based on a knowledge of such devices and
the techniques of their enploymento
MACJ28
SUBJECT: Mines and Boobytraps Used by the Viet Cong in South Vietnam (Cont)
3o Though limited in scope, this booklet will help personnel
in recognizing and avoiding hazards associated with mines and booby-
trapso Supplementary sources of infoxmation are listed on page le
4o Personnel using this booklet are requested to submit comments,
corrections, and additions to the ACofS, J2, ATTN: MACJ28o
1 Incl m Jo Ao McCHRISTIAN
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TABLE OF CONTENTS
Page
MINES AND BOOBYTRAPS EMPLOYMENT 1-42
US FUZES
US Firing Device, Pull Type, Ml 45
US Firing Device, Delay Type, Ml 47
US Firing Device, Pressure Type, MlAl 49
US Firing Device, Pull-Release Type, M3 51
US Firing Device, Pressure-Release Type, M5 53
SOVIET FUZES
Soviet Pressure Fuze MV-5 55
Soviet Pull Fuze MUV 57
Soviet Pull Fuze VPF 59
VC FIRING DEVICES
VC Electric Firing Device 61
VC Improvised Fuze 63
VC Flashlight Firing Device 65
VC Pressure/Pull Firing Device 67
VC Chemical Firing Device 69
us MINES
Page
US Antipersonnel Mine M2A4 with Fuze M6A1 71
US Antipersonnel Mine M3 with Fuze M7A1 73
US Antipersonnel Mine M14 75
US Antipersonnel Mine M16A1 with Fuze M605 77
US Trip Flare M48 with Fuze M6A1 79
US Trip Flare M49 with Fuze M12 81
US Antitank Mine M6A2 with Fuze M603 83
US Antitank Mine M7A2 with Fuze M603 85
US Antitank Mine MlAl 87
SOVIET MINES
Soviet Antitank Mine TM-41 89
Soviet Antitank Mine TMB-2 91
CHICOM MINES
Chicom Antipersonnel and Antitank Mine Number 8 93
Chicom Antitank Mine 95
VC MINES AND SHAPED CHARGES
VC Fixed Directional Fragmentation Mine (DH-10) 97
VC 5-Gallon Oil Can Type Mine 99
VC MINES AND SHAPED CHARGES (Cont'd)
Page
VC US .50 Caliber Ammunition Box Mine 101
VC Improvised Mine 103
VC Pyramid Shaped Mine, Long Type 105
VC Improvised Mine 5-Gallon Can with BLU/3 107
VC Mine Fr40 109
VC Cement "Turtle" Mine Ill
VC Sheet Metal "Turtle" Mine 113
VC Large Water Mine 115
VC Small Water Mine 117
VC Antipersonnel Mine 119
VC Sky Horse 121
VC Mine Improvised From Shell Case 123
VC "Toe Popper" Mine 125
VC Cylindrical Cement Fragmentation Mine 127
VC Cylindrical Cast Iron Fragmentation Mine 129
VC Cylindrical Mine 131
VC Improvised Antipersonnel and Antitank Mine 133
VC Cast Iron Fragmentation Antitank Mine 135
VC "Mound Shaped" Mine 137
VC Round Volvme Mine 139
VC Modified BLU/3 Mine 141
VC Non-Electrical Shaped Charge Mine 143
VC Electrical Antivehicular Shaped Charge Mine 145
VC Bounding Baxomine Shaped Charge Mine 147
VC Improvised Shaped Charge 149
CHICOM GRENADES
Page
Chicom Grenade 151
VC GRENADES
VC Modified Grenades 153
VC Explosive Device Fragmentation Grenade 155
VC VC Four-Sided Shaped Charge Hand Grenade 157
SOVIET GRENADES
Soviet Antitank Hand Grenade, Type RPG-6 159
Soviet RPG-43 Antitank Hand Grenade 161
Soviet RGD-33 Offensive and Defensive Hand Grenade 163
Soviet Defensive Hand Grenade Type F.l 165
Soviet RPG-40 Hand Grenade 167
Soviet Offensive Hand Grenade Type RG-42 169
MISCELLANEOUS ASSOCIATED ITEMS
VC Bicycle Mine '. 171
US Butterfly Bomb (Bomb, Fragmentation M83) 173
Chicom TNT Demolition Block 175
Soviet TNT Demolition Block 177
Chicom Red Phosphorus ...» 179
MISCELLANEOUS ASSOCIATED ITEMS (Cont'd)
Page
VC Satchel Charge 181
Bangalore Torpedo 183
Bamboo Bangalore 185
Soviet Blasting Machine PM-2 187
Chicom Blasting Machine LA2B 189
BOOBYTRAPS VC
Spike Trap Box 191
Spike Trap Pit 193
Trap Bridge 195
Steel Arrow Trap 197
Bamboo Whip 199
Barbed Spike Plate 201
Pointed Bamboo Stakes 203
Rotating Spike Trench 205
Spear Trap 207
Spear Launcher 209
Cartridge Trap 211
Grenade Trap 213
VC Banner 215
Booby Trap Punji Sticks 217
Booby Trap Gate 219
Booby Trap Bomblett 221
Grenade Launcher 223
BOOBYTRAPS VG (Cont'd)
Page
Fountain Pen Sabotage Device 225
Cigarette Lighter Assassination Device 22?
VC 3oob7;rbrap Grenade . 229
The Mace 231
Baiiiboo Arch 233
Helicopter Trap 235
Face Knocking Trap 237
Coimriand Detonation or Tripwired Shaped Charge , 239
Cigarette Pack Antipersonnel Bomb 241
Grenade Sabotage Device 242
VC/KVA mime DETECTION CAPABILITY AND SQUIPi.iEI.T 243
Soviet VBI 203M 245
Chicom lype 55-625 248
Soviet YJli 625, Model 1942 and VBi 695, Model 1942 249
Soviet VBi 210, Models 1939 and 1940 252
Soviet Three-Search-Coil Type 255
Soviet Electrical Mine Detector vrith "Search Spade" . , , , 258
GLOSSARY 261
MINES AND BOOBYTEAPS EMPLOYMENT
I. INTRODUCTION.
1. PURPOSE.
This booklet provides information on the VC/NVA techniques
of mine and boobytrap employment and describes some of the devices
that are used.
2. SCOPE.
a. This publication covers various methods of employing
land mines, water mines, explosive boobytraps and non-explosive booby-
traps. Sections are included that identify specific U.S., Soviet
and Chicom fuzes and mines, and typical locally fabricated mines.
b. Also included are safety and disarming procedures which
emphasize the precautions a soldier must observe when handling mines
and boobytraps.
3. RELATED PUBLICATIONS.
Since this booklet is limited in scope, it should be used in
conjunction with FM 5-31, "Use and Installation of Boobytraps," FM 20-32,
"Land Mine Warfare," and TM 9- 1345-200, "Land Mines."
INITIATING ACTIONS
PRESSURE
PULL
Figure 1
3
4. TERMINOLOGY. (See Glossary for other terms).
a. A mine Is an explosive device designed to destroy or
damage vehicles, ships, boats or aircraft or to wound or kill per-
sonnel. It may be detonated by the action of Its victim, by the
passage of time, or by controlled means.
b. A boobytrap Is a device that will injure a person who
disturbs an apparently harmless object or performs a presvmiably safe
act.
c. A fuze is a mechanical device used to initiate a detona-
tion. Fuzes are provided in many forms and sizes. Some have instan-
taneous action while others have some sort of a delay mechanism.
There is a difference between fuze and fuse. A fuse is a burning
device that transmits a flame to Ignite non-electric blasting caps,
firecrackers or similar items.
d. A firing device is a mechanism designed to initiate an
explosive train. When fitted with a blasting cap, it may be used as
a fuze. These devices are known in foreign armies as fuzes, switches
or igniters.
e. A friction igniter is a device designed to fire either
a detonator or a blasting cap or to ignite an attached fuse. Pulling
a stripping wire causes a coated wire or friction cord to be stripped
through a flash or friction compound. This action ignites the com-
pound, which in turn fires the detonator, cap or fuse.
INITIATING ACTIONS
TENSION
RELEASE
PRESSURE
RELEASE
ELECTRICAL
Figure 2
f . A detonatoi is a uigh explosive element in an explosive
train v.hich is used to create or transmit a shock wave to a booster
or to a main charge of explosive.
g. The initiating action depends on the design of the fuze.
Most fuzes are designed to be initiated b- one of the following actions
(figures 1,2):
(1) Pressure. The pressure of a man's foot or the wheel
or tread of a vehicle causes the fuze to function,
(2) Pressure release . Removing a restraining weight
allows the fuze to function.
(3) Pull. A pull on a wire, called a trip wire, attached
to the fuze initiates the fuze action.
(4) Tension release. Cutting a trip wire releases the
tension needed to keep the fuze from functioning.
(5) Pressure/Pull. Either a pressure or a pull will
initiate the fuze action.
(6) Electrical. Closing an electrical circuit initiates
the fuze action.
II. DOCTRINE AND RESPONSIBILITIES.
Policies governing the use of land mine warfare.
NVA mine warfare doctrine closely parallels that of the Chinese
Communist Army, although it is heavily influenced by past guerrilla
warfare experience in the RVN as well as that acquired during the
French-Vietnamese War. Extensive enemy minefields have not been en-
countered in RVN. Present practice of the VC/NVA is to make use of
numerous isolated mines and groups of mines for their nuisance value
and to create casualties, fear and overcautiousness.
It is evident in RVN that VC/NVA commanders at the lowest level
of line units have the authority to install or remove mines as necessary
for offensive and defensive purposes. Engineer units have been trained
to install large minefields if this type of installation is ever re-
quired in RVN.
III. lAND MINES.
1. GENERAL.
a. A mine is a contained explosive or other material designed
to destroy or damage vehicles, ships, boats, or aircraft, or to wound,
kill, or otherwise incapacitate personnel. It may be detonated by the
action of its victim, by the passage of time, or by controlled means.
b. A minefield is a type of artificial obstacle often included
in a barrier plan. Mines assist in protecting friendly frontal, flank,
and rear areas from hostile ground attack and from landings by enemy
airborne and waterbome forces. In guerrilla infested regions, they
help protect positions, areas, and installations from infiltrations
and penetrations.
c. There are two general classes of land mines; antipersonnel
8
and antivehicular , The methods of employment may differ somewhat for
the two, but many of the same dangers exist in the case of both types
of mines. In this section the land mine techniques will be covered.
Specific mines are described in section V.
2. TYPICAL METHODS OF ACTUATION.
a. Trip wires. Trip wires may be used with any type of mine
or improvised explosive, either buried or above the ground. Wires can
be set up with pull release devices, tension release devices or friction
igniters. Trip wires are usually well concealed and difficult to detect.
They may be mixed with dummy wires to confuse detection teams and may
have both ends boobytrapped. Trip wires normally are ustd with devices
that have a zero time delay element in the fuze, which produces an in-
stantaneous explosion. To avoid casualties during disarming, do not
cut any wires until both ends have been checked for boobytraps.
b. Electrical detonation. The VC/NVA often use command deto-
nated mines. One method requires a man to be concealed some distance
from the explosive with a battery pack or hand held generator which is
connected by wires to the mine. When troops or vehicles are in a position
where the mine will do the most damage, the VC detonates it. It is im-
portant to check trees, bushes and the edges of roads for wires. If
wires are found, they should be cut one at a time . Watch out for elec-
trical wires used as trip wires and connected to tension release devices.
When such wires are cut, boobytraps may explode.
MINED
DIRT ROAD OR TRAIL
BUFFALO DUNG
OVER MINES
REFILLED SECTION
OF ROAD WITH BURIED
MINES
REFILLED HOLES, SOME
HAVE MINES
Figure 3 0^^?^
SHOULDER MAY
BE MINED
10
c. Pull wire. This is another command detonation device that
is commonly used. A pull wire is connected to a pull release device or
to a friction igniter, and a VC conceals himself at the other end. When
a target is in position, the VC pulls the wire and detonates the mine.
The same precautions apply here as apply to the trip wire.
d. Pressure devices. These devices are commonly employed in
antivehicular and smaller AP mines. Mines using these devices can be
buried, which makes detection difficult. Mine clearing parties must
conduct meter by meter sweeps of the area as prescribed in FM 20-32.
3. METHODS OF EMPLOYMENT ON DIRT ROADS AND TRAILS. (figure 3)
a. Dirt roads and trails are easily mined, since the traces
normally can be completely eliminated. In instances where traces cannot
be eliminated, the VC use a number of tricks in addition to the normal
mine laying techniques used by both sides.
b. One unusual technique takes advantage of the mine detection
personnel's carelessness. The VC dig up the road and leave, a normal
method of cutting lines of communications. Friendly troops fill in the
dug up sections and the VC return to lay mines in the refilled areas.
These areas must be checked day after day even though nothing is found.
The VC expect you to assume an area is clean after it has been checked
and to become careless and not recheck it.
11
c. The VC may dig holes in the road, lay mines in a few of
them, and refill them with dirt. After the mine detecting teams
check dozens of holes and find nothing in most of them, the next hole
may be expected also to be empty and may not be checked. That care-
lessness is what the VC expect, for they have probably mined that
particular hole, hoping you will ignore it.
d. Some mines may be planted and then covered with straw,
grass, dung, or any natural looking substance. The way to avoid casual-
ties is to check everything.
e. Remember, the above tricks are used in addition to the
normal methods of mine laying used by most armies. The best method
of detecting the mines can be summed up as follows:
(1) Check all places newly refilled with soil, covered
with straw or grass, littered with dung, or any suspicious looking spot.
(2) Do not depend solely on a mine detector. The detector
works on the principle of a magnetic field and has a limited range.
If the batteries are weak or the detector malfunctions, the mine will
not be found. Then, too, the enemy may employ non-metallic mines.
To counter this tactic, the team should gingerly probe the suspected
area with a metal rod or bayonet in addition to using the detector.
The probing should be done at an angle to the ground to lessen chances
of setting the mine off. Proper mine clearing procedures are prescribed
in FM 20-32.
12
MINED HARD SURFACED ROAD
MUD SMEARED ON ROAD
COVERING MINES
HOLES REFILLED
WITH ASPHALT
INE AT
BASE OF
REE
MINES ALONG
SHOULDERS
MINE IN TUNNEL
UNDER ROAD
Figure 4
13
(3) Be patient and continually check and recheck pos-
sible mine locations. Do not fall into the trap of assuming there is
no mine in a hole because it wasn't there yesterday. The VC want you
to do this.
(4) Work with the local people who may be able to pro-
vide information on possible VC mine laying operations.
4. METHODS OF EMPLOYMENT ON HARD SURFACED ROADS. (figure 4)
a. Hard surfaced roads present a more difficult problem
of concealing mines than do dirt roads. The VC may come up with
some very effective ways to trick mine detecting teams.
b. The VC tunnel under the road from the shoulder and plant
a mine. The VC prepares the mine for command detonation, usually
electrical, and carefully fills in the tunnel. Traces of this bur-
rowing activity can be eliminated because of the dirt shoulder. The
leads to the mine are concealed and generally terminate in a place
where a VC can hide while waiting for his victim. This setup is a
very difficult one to detect and requires careful inspection of the
shoulders of the road for wires or traces of digging. If wires are
found, they should be checked and cut. Then the mine must be dug
up and disarmed or destroyed.
14
c. Tricks are employed which are similar to those used on
dirt roads. One of these includes digging up sections of the road.
After these areas are filled in, the VC return and lay mines in a few
of them. This is the same tactic used on dirt roads and is countered
in the same way by constant checking.
d The VC smear the road with mud. This condition forces a
mine detecting team to check the area carefully. The smearing may go
on for several days until one day the VC emp laces mines in the muddied
sections. The mine detecting teams, having checked the areas before
with no results, may become a little careless and miss these mines.
Again, this carelessness is what the VC expect. The smeared areas
must be carefully checked each time troops must cross them.
e. Another trick is to dig up the road, lay the mine, and
refill the hole with asphalt. A spot usually remains that contrasts
with the surrounding asphalt. To avoid detection, the VC use a tire
to mark across the patch and blend it in with the road surface. To
counter this tactic, the detection team must be alert for any signs of
road repair. Each spot must be carefully checked with a detector and
a probe.
f . The soft earth shoulders of surfaced roads are often mined,
This tactic is easily accomplished and provides an effective trap for
unwary troops. This method is not limited to hard surfaced roads but
also may be used on dirt roads and trails. Roadside mining is used
most often in ambush sites where the vehicles and men are to be driven
off the road by fire. Heavy casualties have resulted in this type of
15
60-MM MORTAR SHELL
TRIP WIRE ATTACHED
TO BRANCH
TREE MOUNTED ANTI-PERSONNEL MINE
Figure 5
16
operation. Again, the watch'/ord is caution and thoroughness when clear-
ing the road.
g. These methods may be countered with the same techniques
used in countering dirt road mining. Successful clearing operations
require patience and thoroughness. The procedures prescribed in FM 20-32
should be used to insure iTiaximum effectiveness and safety.
5. OTHER TECHNIQUES OF EMPLOYMENT. (figure 5)
a. The VC use various methods to deceive their victims and
to increase the effectiveness of the mines employed. These tricks are
limited only by the user's ingenuity.
b. To lure soldiers into a trap, it has been common practice
in other wars to use various items as bait. The VC also use this technique,
Likely looking items will be left in areas that are mined and booby-
trapped. These items may be weapons, VG flags, documents, uniforms,
or just about anything that troops would be interested in from a souvenir,
personal comfort, or intelligence standpoint. When a person goes to
examine them, he is blown to bits.
c. The VC employ mines above the ground along land and water
routes used by the enemy. This is a particularly favored and effective
method of using mines improvised from artillery or mortar ammunition.
The mines may be placed in rotten tree trunks, on sticks, next to or
in termite mounds, at the base of or in the branches of trees, in bushes.
17
or in any concealment that affords a "sweeping" action for the frag-
ments. In high grass areas the VC may just lay the mines on the ground
with no other camouflage.
d. Mines may be laid on the bottoms of stream beds for trip
wire initiation, pressure initiation, or command detonation. These mines
may be placed at fords or wherever troops could be expected to wade
through the water.
e. The VC also employ mines in their defensive positions. The
DH-10, a version of the US "Claymore" mine, is particularly effective
as a defensive mine. The DH-10 mine, described later in this book, may
be used against troops moving along roads, trails, or assaulting a posi-
tion. The mine is most effective when employed along restricted paths.
It may be rigged with a trip wire, but normally it is electrically deto-
nated by a concealed VC .
6. LIKELY PLACES OF EMPLOYMENT.
a. This paragraph summarizes places where mines are most likely
to be used, although you must expect the VC to employ mines anywhere.
b. Generally, mines are used wherever troops can be expected
to bunch up, slow down, or present a good target. Such areas are bridges,
curves in roads or canals, single track roads or trails, junctions, hill-
sides, huts, and likely rest areas. Any place that is a good ambush site
is usually a good mine site, and mines are often employed with ambushes.
18
METHODS OF VC MINE MARKING
GROWING GRASS TIED
BUNCHES
NTO
Figure 6
19
Since many of the larger mines are command detonated, the VC many times
need a place of cover and concealment for the person who will initiate
the mine. If an ambush is to be employed with mines, then the ambushers
need positions affording protection from fragments »
7. VIET CONG METHODS OF MARKING MINES (figures 6, 7).
a. Not much is known about the VC methods of telling their own
troops where mines are located. However, there are two methods that have
been reported and are given here as examples = It is emphasized that these
may not apply country-wide.
b. In one tactical zone, the VC tie growing grass into bunches
at each corner of a 2 meter square. The mine is located in the center of
the square.
c. Along roads and trails, sticks or stones may be used to mark
mine fields. For example, in one tactical zone a stick broken at a right
angle and lying across the road may mean a VC booby trap or mine 200-400
meters ahead. A stick or length of bamboo lying parallel to the edge of
the road or trail may indicate a clear route. Three sticks or stones, one
at each side of the road and one in the center, may mean that the road
should not be used.
20
METHODS OF VC MINE MARKING
1
STICK BROKEN AT A
RIGHT ANGLE ACROSS
ROAD MEANS MINES OR
BOOBY TRAPS 200-i+OO
METERS ON
3 STICKS OR STONES IN
SIMILAR PATTERN MEANS
DON'T USE ROAD
STICK PARALLEL TO
ROAD MEANS ROAD IS
OPEN
Figure 7
IV. WATER MINES.
1. GENERAL,
The VC have used water mines against the river fleet with a large
measure of success. The mines have been locally fabricated, but they are
very effective. Typical water mines are described in Section V.
2. TYPICAL METHODS OF INITLMING.
Water mines are exploded almost exclusively by command detonation,
either electrically or by pull wire. This method requires electrical or
pull wires running '-q the shore where a concealed man explodes the mine
when a target passes.
3. METHODS OF EMPLOYMENT (figures 8-10).
a. Water mines have been used in canals and rivers. The tech-
niques are similar in both applications.
b. The VC tie mines and explosives to tree trunks or put them into
boats and place these items in the middle of the waterway. When a target
passes by, the mine is exploded. The boat trick is particularly effective
since it will lure someone in our friendly forces craft to investigate.
When the tree trunks are employed, some form of camouflage, such as duck-
weed, is needed. The command detonation technique makes it necessary to
check suspicious looking objects from a distance before approaching and
to spot the wires leading to the shore.
22
WATER MINE
ANCHOR WIRE
ORANGE CIRCULAR TUBE
FOR BUOYANCY
Figure 8
23
c. The VC have been known to plant command detonated mines in
the bottoms of shallow waterways, such as canals that are less than a
meter in depth, even at high water. Friendly forces should be on the look-
out for wires running to the shore which enable the VC to explode a mine
when a vessel passes.
d. In deep channels, mines are set up at varying depths to best
handle different vessels. Some of the mines may be controlled from the
shore, while others are set at given depths. The mines can also be set
up in such a manner that VC on the river banks can position them in the
paths of targets.
e. Most water mines appear to have one thing in common; the deto-
nation is usually initiated electrically. Conventional mine sweeping
operations will detect these mines, but there is the danger that during
the course of the operation a mine will be detonated by a VC on the river
bank. Using infoimation from local people is the best way to detect and
to make provisions to eliminate a mine threat.
4. LIKELY PIACES OF EMPLOYMENT.
a. Water mine locations are similar to those for land mines.
The VC seek to place water mines where vessels must slow down, bunch up,
or stop.
b. The mines may be found at bends, narrow straits, and in mid-
channel. Since some water mines can be positioned by the operator on the
shore, they may be located anywhere in a channel. Since water mines are
often used with ambushes, likely ambush sites are also likely mine sites.
24
WATER MINE
TERIES ON SHORE
Figure 9
25
WATER MINE
MINE CAN BE MOVED BACK AND FORTH INTO
PATH OF BOAT
Figure 10
26
BOOBYTRAPPING ONE MINE TO ANOTHER
'^_iM'nW^u^
Figure 11
27
V. BOOBITRAPS.
1. GENERAL.
Boobytraps have been used frcm the earliest days of recorded
history. Ranging from a simple hole in the ground to a complicated ex-
plosive device, the boobytrap is an effective way to cause enemy casualties
and hamper enemy operations at a low coat to yourself. The effective use
of boobytraps also undermines the morale of eneny forces. This section
is intended to orient the soldier on the potential uses of explosive and
non-explosive boobytraps encountered in Vietnam.
2. EXPLOSIVE BOOBYTRAP EMPLOYMENT.
a. Explosive boobytraps are extensively employed by the VC in
all phases of their operations, from combat to sabotage. The traps vary
from the simplest devices to fairly complicated items. Explosive booby-
traps are initiated in the same manner as mines, using the same firing
devices and fuzes. The tricks used to lure victims into mined areas are
zlLso used to lure them into boobytrapped areas.
b. One of the most common uses of explosive boobytraps is with
mines. When mines are being cleared, each one must be checked for booby-
traps. This involves searching for various devices that could possibly
detonate a mine and that are in addition to the main fuzes (figures 11, 12)*
28
MULTIPLE BOOBYTRAPPED MINE
PULL TYPE
FIRING DEVICE
PULL WIRE
'■/mi
\"-^
ACTIVATOR
s^TAKE
ACTIVATOR
PRESSURE-RELEASE
FIRING DEVICE
PRESSURE
BOARD
Figure 12
29
c. Items such as weapons, uniforms, dead bodies, binoculars,
flags, vehicles, and a host of other objects may be rigged vdth explosive
boobytraps (figures 15-18),
d. Buildings of all types offer the enemy unlimited boobytrap-
ping opportunities, Entranceways, furniture, windows, floor .^ards, plumb-
ing, and electrical circuits can be effectively boobytrapped ,
e. Another type of boobytrap is the device that looks innocent
but is deadly. Such devices take the forms of fountain pens, cigarette
lighters, packages, and other ordinary items. These devices have been ex-
tensively used in the towns and cities. Two such devices are described in
Section V.
f . Roads, trails, and paths offer excellent locations for booby-
traps (figures 17-19), The boobytraps are usually attached to obstacles
such as rocks or tree limbs. Troops in a hurry may brush by these, or
hastily remove them, without checking for trip wires or pressure release
devices. There may be dummy traps among the real ones which may annoy the
the average soldier to the point of becoming reckless,
g. Areas containing supplies are easily boobytrapped (figures
20-22). All caches of weapons, food, ammunition, and other materiel arust
be carefully searched for boobytraps before they are moved or destroyed.
30
BOOBYTRAPPED
SOUVENIR
SOLDIER PICKS UP
SOUVENIR ON TOP OF
FIRING DEVICE
WITH WEIGHT GONE SPRING DRIVEN
STRIKER HITS PERCUSSION CAP
SETTING IT OFF
PERCUSSION CAP SETS OFF
DETONATOR
DETONATOR SETS OFF MAIN CHARGE
Figure 13
h. The number and types of explosive boobytraps are unlimited. As
boobytraps are dependent only on the user's ingenuity, some tricky devices
are encountered. To avoid hazards, be patient and thorough, A hasty approach
vd.ll lead to trouble. Proper procedures are prescribed in FM5-31.
3, NON-EXPLOSIVE BOOBYTRAP EMPLOYMENT.
a. Non-explosive boobytraps will generally be employed in a manner
similar to mines. The locations are the same, but these non-explosive traps
are primarily aimed at personnel. Non-explosive boobytraps take various
forms, but all take advantage of local materials and natural camouflage.
Specific types are illustrated in Section V,
b. Non-explosive boobytraps are often employed with mines and at
ambush sites. Such boobytraps provide a means of hindering the progress of
troops moving along roads and trails. Muddy roads and trails provide the nec-
essary camouflage for pits, and heavy vegetation will cover a multitude of
traps. Open, grassy areas are not iiamune as spiked plates and pits may be
used. Stream beds are often boobytrapped at fords or %riierever troops are
likely to pass.
c. As with all boobytraps, the VC expect you to be in a hurry and
not take the time to carefully check for these traps. The VC are extremely
good at disguising their traps, and only a thorough, patient check of your
route will reveal the traps. Indicators to watch for are shiny metal, flat
areas, differences in color of vegetation, trip wires, and anything that
appears to be out of place. Again, it is emphasized that the best way to
avoid these hazards is to obtain information from the local people who gen-
erally know where the traps are located.
32
FIREWOOD BOOBYTRAP
PULL WIRE
PULL FUZE
CHARGE
Figure lA
33
WAR TROPHY BOOBYTRAP
Figure 15
34
SOLDIER
IGN
IN
POSITION
ECTRIC DETONATOR
ETS OFF MAIN CHARGE
IGNITION BOOBYTRAP
Figure 16
35
OBSTACLE BCX)BYTRAP
WIRE
CHARGE
Figure 17
36
ROADSIDE BOOBYTRAP
DETONATING
CORD
WIRED TO
OBSTRUCTING
BRANCH
TYPE FIRING
EVICE
SERIES OF CONNECTED
CHARGES
Figure 18
37
WHEEL-TRACK BCX)BYTRAP
PULL TYPE
FIRING DEVICE
EXPLOSIVE
CHARGE
TAUT
WIRE
Figure 19
38
BOOBYTRAPPING
SUPPLIES
PULL TYPE
FIRING DEVICE
DETONATING CORD
CHARGE
NONELECTRIC
Bi>ASTING CAP
NOTE: A NONELECTRIC
BLASTING CAP MUST BE
CRIMPED ONTO THE EXPLOSIVE
END OF THE DETONATING CORD
ENTERING THE CHARGE.
Figure 20
39
BOOBYTRAPPING AN AMMUNITION DUMP
Figure 21
40
SUPPLY DUMP BOOBYTRAP
PULL RELEASE
FIRING DEVICE
TNT BLOCKS
Figure 22
a
U, GENERAL PRECAUTIONS.
a. Do not be in too much of a hurry, if at all possible. As the
name "boobytraps" implies, they are used to catch the careless soldier.
b. When sweeping an area, remember that both explosive and non-
explosive boobytraps may be employed with mines.
c. Be suspicious of all objects that appear to be loose. When
checking captured factories, supply dumps, or materiel, watch for boobytraps,
d. Before cutting taut trip wires, check both ends for bo obyt rapping.
One end may be attached to a tension release device. Before disturbing any
object, check it for wires arxi pressure release devices,
e. If you find explosive boobytraps, destroy them in place or mark
them and leave them adone. Unless it is absolutely necessary for you to move
them, let explosive ordnance disposal personnel take care of removal and disposal,
f . Do not take anything for granted. An object may appear to be
innocent, but if it is found in suspicious circumstances, expect a trap,
g. Boobytraps are dangerous, effective weapons, but if you show a
healthy respect for them and handle them properly, you should not be a casualty.
PAGE A2
lEAVE THIS PAGE BLANK
43
V. SPECIFIC FUZES, MINES AND BOOBYTRAPS
This section is intended to provide a means of identifying specific
mines and boobytraps and to cover some basic disarming procedures. Fur-
ther information on U.S. firing devices and mines is given in TM 9-1345
-200.
44
PULL RING-
LOCKING SAFETY
PIN
POSITIVE SAFETY
PIN
STANDARD BASE
RELEASE PIN
RELEASE PIN SPRING
SPLIT HEAD
STRIKER SPRING
STRIKER
PERCUSSION CAP
US FIRING DEVICE, PULL TYPE, Ml
45
U.S. FIRING DEVICE, PULL TIPE, Ml
This firing device has been employed by friendly forces and is in
the hands of the VC, It is especially useful in antipersonnel mines and
boot^raps.
FUNCTIONING. A pull on the ring causes the split head of the striker
to compress and to be released. This action fires the device,
DISARMING. Insert the positive and locking safety pins. Disconnect
any trip wires. Unscrew the base for destruction or safe storage.
CAUTION. Do not attempt to remove the detonator from the base,
CHARACTERISTICS
Type Pull
Operating Pull 1.35-2.30 kg (3-5 Pounds)
Material of Case Metal
Color OD
46
on 1 K/( C D
^
-COUPLING BASE (NOT TO
BE REMOVED)
PR InLK -
\
INSPECTION
HOLE
'IDENTIFICATION AND SAFETY
STRIP (COLORED ACCORDING
TO DELAY)
FIRING PIN^
FIRING PIN-^
SPRING
""^ ijJM
GLASS AMPOULE-
^\
•—^RESTRAINING WIRE
US FIRING
DEVICE,
, DELAY TYPE, Ml
47
U.S. FIRING DEVICE, DELAY TYPE, Ml
This firing device is employed in this theatre by the RVNAF and may
be in the hands of the VC.
FUNCTIONING. A pressure of 2.30 kg ($ pounds) or more *dll crush the
glass vial of acid that is contained inside the fuze. The acid eats away
the restraining wire, causing the striker to hit and detonate the percus-
sion cap. The color of the safety strip indicf.tes the time of delay. The
device may have a 4 minute to 9 day delay.
DISARMING. There is no safe way to disarm this device. If absolutely
necessary, insert a safety pin or nail through the inspection holes and
destroy in place or call explosive ordnance disposal personnel for assistance,
CHARACTERISTICS
Type Chemical delay
Material of Case Upper half -Copper
Lower half -brass
Color , Unpainted except for
safety tab.
48
US. FIRING DEVICE
PRESSURE TYPE, MIAI
PRESSURE CAP
STRIKER SPRING
STRIKER
PERCUSSION
CAP
KEY HOLE SLOT
TRIGGER PIN
STANDARD
BASE
49
U.S. FIRING DEVICE, PRESSURE TYPE, MlAl
The MlAl has been frequently used by RVNAF and may also oe in t he hands
of the VC. It may be used to detonate antipersonnel mines and other explo-
sive charges, including boobytraps.
FUNCTIONING. A pressure of 9.20 kg (20 pounds) or more on the pressure
cap depresses the trigger spring, vrtiich causes the trigger pin to move into
the barrel of the device. This action releases the striker and fires the device,
DISARMING. Place the safety pin or a nail in the positive safety pin-
hole. If a safety clip is available, replace it. The device will not fire as
long as the positive safety pin is in. Unscrew the base for destruction or
safe storage,
CAUTION, Do not attempt to remove the detonator from the base.
CHARACTERISTICS
Type , Pressure
(^erating Pressiore 9.20 kg (20 pounds)
Material of Case .,., Metal
Color OD
KNURLED KNOB
WINCH-
SAFETY PIN
(LOCKING
ANCHOR CORD
FIRING PIN
SPRING
FIRING PIN
PERCUSSION PRIMER-
TRIP WIRE
RATCHET
COTTER PIN
RELEASE PIN
SAFETY PIN
(POSITIVF)
REMOVE LAST
COUPLING BASF
■CELLULOID PROT^^CTOR
US FIRING DEVICE
PULL-RELEASE TYPE, M3
51
U.S. FIRING DEVICE, PULL-RELEASE TYPE, M3
This firing device is used by RVNAF in antipersonnel mines and booby-
traps, and may be in the hands of the VC .
FUNCTIONING. A pull of 2.8 to 4.6 kg (6 to 10 pounds) on a trip wire,
or a release of tension on a trip wire, allows the striker to become dis-
engaged from the release pin to fire the device.
DISARMING. First, insert the positive safety pin. Then insert the
locking safety pin and remove the trip wire from the winch. Unscrew the
base for safe storage or destruction.
CAUTION. DO NOT TOUCH TRIP WIRE I ! Do not attempt to remove the det-
onator from the base.
CH/.RACTERISTICS
Type o Pull and tension release
Operating Pull 2.8 to 4.6 kg (6 to 10 pounds)
or a release of tension
Material of Case Metal
Color OD
52
RELEASE PLATE
STRIKER
SAFETY PIN
NTERCEPTOR
HOLE
SAFETY PIN
HOLE
PERCUSSION CAP
COTTER PIN
US FIRING DEVICE
PRESSURE-RELEASE TYPE, M5
53
U.S. FIRING DEVICE, PRESSURE-RELEASE TYPE, M5
This firing device is used as an antilifting device in boobytraps
and mines by RVNAF and may be in the hands of the VC .
FUNCTIONING. When a restraining load of at least 2.3 kg (5 pounds) is
removed from the latch, a swing lever within the device is released, strikes
the percussion cap and initiates the firing chain.
DISARMING- DO NOT DISTURB THE RESTRAINING LOAD ON THE LATCH. Insert
the positive safety (nail or wire) through the large intercepter holes,
and then insert the locking safety pin. It is then safe to remove the
restraining load. Unscrew the base for safe storage or destruction.
CAUTION. Do not attempt to remove the detonator from the base.
CHARACTERISTICS
Type Pressure release
Restraining pressure 2.3 kg (5 pounds) minimum
Material of Case Metal
Color Light khaki , green
54
PRESSURE FUZE,MV-5 (SOVIET)
55
SOVIET PRESSURE FUZE MV-5
The enemy in Korea made extensive use of this fuze in the TM-41 anti-
tank mine and in the TMD-B Wooden Box Antitank mine. It may also be used
in the TMB-1, TMB-2, and TMS-B mines. It may be available to the VC .
FUNCTIONING. A pressure of 10.1 kg (22 pounds) on the top of the fuze
moves the pressure cap down to a position where the striker retaining ball
moves into a recess at the side of the cap. This action releases the spring
loaded striker which fires the fuze.
DISARMING. Remove the fuze from the mine and unscrew the base with the
detonator.
CAUTION. The detonator is extremely sensitive to pressure and heat, so
care must be exercised in removing and handling it. Do not attempt to remove
the detonator from the base.
CHARACTERISTICS
Type ■ . . Pressure
Operating Pressure 10.1 kg (22 pounds)
Material of Case • Metal
Color Varies
FUZE —
56
-TRANSIT PIN
-PERCUSSION
CAP
DETONATOR-
FUZE UNCOCKED FOR TRANSIT
SOVIET PULL FUZE MUV
57
SOVIET PULL FUZE MUV
This simply constructed fuze has been frequently employed by the Com-
munists, especially in improvised devices rigged with trip wires. It is
also used in the POMZ-2, PMD-6 and YAM series mines.
FUNCTIONING. A force of 0.9 kg (2 pounds) will remove the striker
retaining pin and release the spring-driven striker to fire the fuze.
DISARMING. Cut any slack trip wires that are attached to the eye
of the striker retaining pin. Remove the fuze from the mine and unscrew
the base with the detonator. This fuze may also be set with a taut trip
wire attached to the upper hole of the striker with the striker retaining
pin removed. The fuze will function when the trip wire is cut. In this
case, insert a nail or wire into the exposed lower striker retaining pin
hole, and then cut the taut trip wire. This fuze will function even
though a nail or pin is in the upper hole.
CAUTION. The detonator is extremely sensitive to pressure and heat,
and care must be exercised in removing and handling it. Do not attempt
to remove the detonator from the base.
CHARACTERISTICS
Type Pull or tension release
Operating pull .... 0.9 kg (2 pounas)
Material of case . . . Metal, plastic and rubber composition
Color Varies
58
SOVIET PULL FUZE VPF
PULL RING
SAFETY PIN
MD-2 DETONATOR
59
SOVIET PULL FUZE VPF
This fuze was reportedly encountered on a few occasions in Korea.
It is used in standard and improvised mines of all kinds, both on land
and in water. Its use by the Viet Cong should be anticipated.
FUNCTIONING. This fuze is normally set to function by a pull on
the pull ring, but may be fitted with a rod projecting from the clamp
top so that it will function by lateral pressure or pull on the rod.
When either action occurs, the claw- like base of the clamp top releases
the ball shaped end of the striker, thus firing the fuze.
DISARMING. Carefully insert a nail or wire through the safety pin
hole and remove the fuze from the mine, unscrewing the base with the
detonator.
CAUTION, Because of the sensitivity of this fuze, extreme care
must be used in handling. Do not force the parts or attempt to remove
the detonator from the base. It is recommended that mines fitted with
this type of fuze be blown in place.
CHARACTERISTICS
Type Pull (also lateral pressure on an extension rod)
Operating force . . 3.9-6.4 kg (8.5-14 pounds) pull or 1-1.6 kg
(2.5-3.5 pounds) lateral pressure on rod
Material of case . . Metal
Color Varies
60
VC ELECTRIC FIRING DEVICE
TIN
BAMBOO
CONTACT W
BATTERY
61
VC ELECTRIC FIRING DEVICE
This firing device, used to set off road mines, is constructed of
bamboo, tin and a 4.5-volt battery. The mine is set off when a vehicle
passes over the device.
DISARMING. Disconnect battery or cut wires one at a time .
CHARACTERISTICS
Bamboo Approx. 97.4 cm (3 ft) long,
split in half lengthwise
Diameter 3.7 to 5.1 cm (1-2 to 2 inches)
Contacts Tin
Power 4.5-volt battery
Placement Under surface of ground wrapped in
plastic
62
VC IMPROVISED FUZE
PRESSURE HEAD
CAMMING ARM
STRIKER
RETAINING
FORK
SUPPORT PIN
SAFETY PIN HOLE
63
VC IMPROVISED FUZE
The US Bomb, Fragmentation M83 is converted by the VC to an anti-
personnel mine. Thi3 mine is described in this book with US mines.
FUNCTION. This mine employs a combination pressure/pull fuze and
it is armed when the safety pin is removed. Pressure applied on top of
the pressure head causes the camming arm to force the striker retaining
fork away from the pressure head. This releases the spring loaded firing
pin to strike the percussion cap. This fuze may also be fired by a trip
wire attached to the striker retaining fork. The fuze can be used simul-
taneously as a pressure and pull fuze, or it could be used without the
pressure head as a pull fuze.
SAFETY DEVICE. Safety pin only.
CHARACTERISTICS
Location Top of mine is normal fuze well of M83 bomb.
Booster type Primer- detonator holder threaded into fuze
with shaped charge booster-detonator slip
fitted with wax sealer.
Number of fuzes . . . One
Markings Fuze base is cap assembly for fuze, air/
ground, M129 for bomb, fragmentation, M83
and is marked accordingly.
Construction Material. Steel with lead primer detonator holder
and brass booster-detonator.
Height of fuze .... 5.7 cm (2.25 inches)
64
FLASHLIGHT FIRING DEVICE
ELEC CAPx^
CONTACT WIRES
^/A//
GROUND
TIN
BAMBOO CAP
WOOD PEG
BATTERY
BAMBOO TUBE
TIN
65
FIASHLIGHT FIRING DEVICE
A bamboo tube with a cap, housing two BA.-30 flashlight batteries,
is placed under a mine. When pressure is applied to the upper half, the
wooden pins break, allowing electrical contact and thus causing the mine
to detonate.
66
TRIP WIRE
STRIKER
LOCK ARM
STRIKER
SPRING
VC PRESSURE/PULL FIRING DEVICE
67
VC PRESSURE /PULL FIRING DEVICE
This firing device is constructed of light gauge metal and can be
used as a combination pressure or pull. It is used with grenades and
boobytraps.
FUNCTION. Pressure applied to the striker, via the trip wire or
by a direct pressure from above, forces the striker to rotate slightly
causing the lock arm to release the striker.
DISARMING. Caution should be used when disarming. The striker must
be prevented from striking the percussion cap.
CHARACTERISTICS
Type Pressure/Pull
Width Approx. 3.8 cm sq (l\ in sq)
Height ....... Approx. 9.1 cm (4 in)
Material Light gauge metal
68
CAP
COPPER SULFATE
SOLUTION CONTAIN
WIRE
FIRING FUZE
PIN
^\\\/\\\
'''■■'^'■^''M
FUZE
BODY
END FIRING PIN
CAP SPRING
CHARGE
CHEMICAL FIRING DEVICE
69
CHEMICAL FIRING DEVICE
This firing device may be employed by the VC for sabotage purposes.
It is attached to mines and demolition charges- Its delay is between 20
and 38 minutes.
FUNCTIONING. The copper sulfate tube is broken and the solution reacts
on the matal wire securing the firing pin. The wire is weakened and breaks,
allowing the spring driven firing pin to strike the primer, resulting in
detonation of the charge.
DISARMING. Once the firing device has been initiated, there is no
way to safe the device In an extreme emergency, unscrew the firing device
and place it away from the charge. Evacuate the area and wait at least one
hour before returning to examine the device.
70
PR0N6S
LOCKING SAFETY PIN
PROJECTILE,
CAP-
vPRO»CCTOR TUBE]
-SAFETY PIN (POSITIVE)
REMOVE LAST
-PRESSURE smme
-TRIP WIRE
'RELEASE PIN RING
'release PIN
1R1NG MN
-PRIMER
-COUPLING BASE
IGNITER CHARGE
cc
a.
«
o
z
z
o
u
u
N
3
IGNITER
.BURSTING CHARGE
■BOOSTER
DETONATOR
.RELAY IGNITER CHARGE, DELAY CHARGE
PROPELUNG CHARGE
US ANTI-PERSONNEL MINE M2A4
WITH FUZE M6AI
71
US ANTIPERSONNEL MINE M2A4 WITH FUZE M6AI
This series of mines is of the "bounding" type. To obtain a more
effective fragmentation pattern the burst charge contained in a projectile
is projected several feet into the air by a propelling charge before it is
exploded. It has a casualty radius of 10 meters and is dangerous to 150
meters. It is employed by burying and leaving the top of the fuze pro-
jecting above the ground. It may be fired by pressure or trip wire when
used with the M6A1 fuze.
FUNCTIONING. A pressure of 3.7 to 9.2 kg (8 to 20 pounds) on one or
more of the three prongs, or a pull of 1.4 to 4.6 kg (3 to 10 pounds) on
a trip wire attached to the release pin, causes the release of the firing
pin which strikes the primer and initiates the propelling and explosive
charges. The shell is projected into the air, and the delay charge causes
the explosive train to function, bursting the shell at a height of 2-3 meters
DISARMING. Carefully inspect for boobytraps and uncover the mine to
expose the safety pin hole and the locking pin hole. Insert the safety
pins. Disconnect the trip wires. Remove the fuze from the mine.
CHARACTERISTICS
Weight ... 2.30 kg (5.01 pounds)
Weight of explosive. 0.16 kg (.34 pounds)
Diameter 24.4 cm (9.63 inches)
Height 9.5 cm (3.75 inches)
Color OD with yellow markings
72
FUZE
FUZE WELL CLOSING PLUG
HIGH EXPLOSIVE
CHARGE
US ANTI-PERSONNEL MINE, M3
WITH FUZE M7AI
73
US ANTIPERSONNEL MINE M3 WITH FUZE M7A1
This is a fragmentation type mine. It consists of a high explosive
charge in a heavy cast iron case. It is normally employed at the surface
of the ground, but it may be employed above the ground for increased
effect. This mine has three fuze wells permitting boobytrapping with a
variety of fuzing arrangements. It is normally installed with the M7A1
fuze .
FUNCTIONING. A pressure of 3.68 to 9.20 kg (8 to 20 pounds) on any
of the fuze prongs or a pull of 1.35 to 4.60 kg (3 to 10 pounds) on the
release pin will release the firing pin which will strike the primer and
initiate the explosive train.
DISARMING. Carefully remove comouflage and dirt. This mine is very
adaptable to boobytraps, so examine it carefully before beginning removal.
Insert the firing pin safety pin (positive) first, and then insert the re-
lease pin safety pin (locking). Disconnect the wires. Remove the mine
and remove the fuze or fuzes.
CHARACTERISTICS
Weight 5.1 kg (11 pounds)
Weight of explosive . 0.41 kg (.90 pounds) of TNT
Width 8.9 cm (3.5 inches)
Height 22.1 cm (8.7 inches)
Color . OD with yellow markings
74
PULL CORD
NDICATING ARROW
SAFETY
CLIP
VERTICAL
RIBS
/CARRYING
^ CORD
SAFETY CLIP REMOVED,
SIDE VIEW
SAFETY CLIP IN POSITION,
TOP VIEW
US ANTIPERSONNEL MINE MI4
75
US ANTIPERSONNEL MINE M14
This plastic, pocket size M14 mine was designed to inflict injuries
requiring prolonged hospitalization rather than to kill. The mine may be
buried in roads, footpaths, or other local avenues of approach for foot
troops. Because of its plastic construction, the M14 is extremely diffi-
cult to detect by electronic means.
FUNCTIONING. A pressure of 9.20 to 16.1 kg (20 to 35 pounds) of pres-
sure on the pressure plate causes a belleville spring to reverse itself
and drive the firing pin into the detonator, causing it to fire, thus set-
ting off the main charge.
DISARMING. Carefully uncover the concealed mine. Neutralize any
boobytraps. Examine the sides and bottom of the mine for any evidence of
activation, damage, or malfunctioning. If there is any evidence of damage
or malfunctioning, do not attempt to neutralize the mine. Destroy it in
place. Insert the safety clip in the slots in the pressure plate.
CHARACTERISTICS
Weight o . 0.1 kg (3.33 ounces)
Weight of explosive . 0.03 kg (1 ounce) of tetryl
Diameter 5.7 cm (2.2 inches
Height 4.4 cm (1.6 inches)
Color OD with yellow markings
76
POSITIVE SAFETY PIN
REMOVE LAST
PRESSURE SPRING
LOCKING SAFETY PIN
INNER CASING
DELAY CHARGE
RELAY CHARGE
OUTER CASING
FLASH IGNITER CHARGE
RESSURE PRONGS
TRIGGER
RELEASE PIN SPRING
RELEASE PIN RING
FIRING PIN SPRING
FIRING PIN
INTERLOCKING PIN
PERCUSSION PRIMER
FRAGMENTATION SHELL(BODY)
FRAG. CHARGECBURSTING
CHARGE)
BOOSTER CHARGE
DETONATOR
PRIMER MIXTURE
DELAY ELEMENT
EXPELLING CHARGE
US ANTI-PERSONNEL MINE MI6AI
WITH FUZE M605
77
US ANTIPERSONNEL MINE M16A1 WITH FUZE M605
This mine is of the "bounding" type and functions in a manner similar
to the mine M2A4 previously described. The mine has an explosive charge
three times larger than the M2A4, with a resultant more effective frag-
mentation pattern and a larger effective radius. It is buried with only
the top of the fuze projecting and can be activated by pressure on a trip
wire.
FUNCTIONING. A pressure of 3.7-9.2 kg (8 to 20 pounds) on any of
the three prongs of the fuze, or a pull of 1.4-4.6 kg (3 to 10 pounds) on
the release pin, causes the firing pin to strike the primer and initiate
the propel lant train. The mine propelling charge projects the mine
straight up and ignites the two detonator delay charges. These charges
explode the booster, which in turn explodes the bursting charge at a
height of 1 to 2 meters.
DISARMING. Check for boobytraps. Carefully uncover the top of the
mine and examine it for evidence of malfunction or damage from blast.
If the mine is damaged, destroy it in place. Insert a pin into the posi-
tive safety pin hole first. Insert the safety pin or wire into the lock-
ing safety pin hole. Remove all trip wires. Lift the mine from the ground
and remove the fuze.
CHARACTERISTICS
Weight 3.6 kg (7.9 pounds)
Weight of explosive. . 0.46 kg (1 pound) of TNT
Diameter 10.3 cm (4.1 inches)
Height 14 cm (5.5 inches)
Color OD with yellow markings
PRONGS
SAFETY PIN{POSmVE) REMOVE LAST
RELEASE PIN SAFETY PIN
PARACHUTE
FLARE CASE
SUSPENSION CABLE
CANDLE
FIRST- FIRE CHARGE
FELT PAD
QUICKMATCH
EXPELLING CHARGE
DELAY FUZE
PROPELLING CHARGE
RELEASE PIN RING
IGNITER
<
z
m
o
III
bi
N
It.
RELAY CHARGE
US TRIP FLARE M-48 WITH FUZE M6AI
79
US TRIP FLARE M-48 WITH FUZE M6A1
Captured quantities of these items have been mistakenly used by the
enemy as antipersonnel mines and boobytraps- The trip flare does have
a use in AP mine fields when used as a warning device in the forward
edges of the field, but it should not be used as an AP mine. Its similar-
ity in appearance to the US M2A4 bounding AP mine is probably the reason
for its misuse by the enemy.
FUNCTIONING. The fuze is actuated by a pressure on the prongs or a
pull on the pull ring. When this occurs, the cannister is propelled into
the air to explode at a height of 90 to 150 meters. The burst releases
a white parachute flare that burns for twenty seconds.
CAUTION. Although this is not an AP mine, serious burns can be caused
by premature detonation.
DISARMING. Check for boobytraps. Insert safety pins, disconnect
trip wires, and remove the fuze from the flare.
CHARACTERISTICS
Weight 2.3 kg (5.0 pounds)
Diameter 14 cm (5.5 inches)
Height 24.8 cm (9.75 inches)
Color OD with yellow markings
80
US TRIP FLARE M-49, WITH FUZE MI2
STRIKER SPRING
SAFETY PIN
STRIKER
OUICKMATCH
SAFETY LEVER
(COCKED)
TRIGGER PIVOT
POINT
TRIGGER SPRING
TRIP WIRE SLOT
PERCUSSION PRIMER
BLACK POWDER
CANDLE
HOLDER
81
US TRIP FLARE M-49 WITH FUZE M12
This flare is used as a warning device in forward edges of mine
fields. When set off, the flare illuminates the area so that effective
fire can be brought to bear on the intruders. The VC often mistake these
flares for hand grenades.
FUNCTIONING. A taut wire holds the trigger in an armed position
(vertical) against the pressure of the trigger spring. An additional pull
of .9 to 4.1 kg (2 to 9 pounds), or a release of tension on the trip wire,
allows the trigger to release the lever. The released lever permits the
striker to hit the percussion cap and to set off the flare.
DISARMING. Press in on the lever and insert a pin. Remove the trip
wire, allowing the trigger to pivot to the unarmed position. The flare is
now safe to be moved.
CMRACTERISTICS
Weight 0.69 kg (1.5 pounds)
Diameter 7.62 cm (3.0 inches)
Height o . 17.35 cm (6.75 inches)
Color OD with yellow markings
4
ARMING PLUG IN SAFE
POSITION
82
PRESSURE PLATE
ACTIVATOR WELL
(COVERED BY TAPE AS
SHIPPED)
US ANTI-TANK MINE
WITH FUZE M603
83
US AT MINE M6A2 WITH FUZE M603
This mine consists of a TNT-loaded body with an M603 fuze, a booster,
and an arming plug. There are two secondary wells which make this mine
very adaptable to boobytraps. It is employed by burying just below the
ground surface.
FUNCTIONING. When the arming plug is in the armed position, a force
of 138 to 184 kg (300 to 400 pounds) on the pressure plate depresses the
belleville spring of the mine, resulting in the belleville spring of the
fuze being depressed. This spring snaps into reverse, driving the firing
pin into the detonator, thus initiating the explosive train.
DISARMING Carefully uncover the concealed mine, examining for booby-
traps. Examine the bottom and side secondary wells for boobytrapping .
Replace all safety pins in secondary firing devices, if any. Remove trip
wires, checking for other boobytraps. Turn the arming plug to SAFE and
remove it. Remove the fuze and replace the safety clips. If the fuze is
frozen destroy the mine in place or notify explosive ordnance disposal
personnel .
CHARACTERISTICS
Weight 9 2 kg (2C pounds)
Weight of explosive. . 5.5 kg (12 pounds) of TNT
Diameter 33 cm (13.12 inches)
Height 8.25 cm (3.25 inches)
Color CD with yellow markings
84
U.S. AT MINE M7A2 WITH FUZE M603
FUZE MINE M.603
MOVABLE PRESSURE
PLATE-DISARMED POSITION
SECONDARY FUZE WELL FOR CARRYING PLUG
AND BOOBYTRAP FIRING DEVICE
85
US ANTITANK MINE M7A2 WITH FUZE M603
The mine consists of an explosive charge in a quart size, rectangular,
light steel container intended for use against trucks and light tanks.
It may be also used as an antipersonnel mine or as a demolition charge.
It contains a secondary fuze well and is easily boobytrapped. It is armed
by sliding a moveable pressure plate over the fuze.
FUNCTIONING. A force of 63 to 109 kg (140 to 240 pounds) on the mine
pressure plate depresses the pressure plate of the fuze. The belleville
spring of the fuze snaps into reverse and drives the firing pin into the
detonator, thus initiating the explosive train.
DISARMING. Carefully uncover the mine and check for boobytraps.
Insert a positive safety pin into the secondary fuze, if present. Remove
all trip wires. Slide the mine pressure plate from its position over the
fuze. Remove the fuze. If the fuze is frozen, destroy the mine in place
or notify explosive ordnance disposal personnel.
CHARACTERISTICS
Weight 2.2 kg (4.88 pounds)
Weight of explosive. 1.6 kg (3.62 pounds) of tetrytol
Length 17.8 cm (7 inches)
Width 11.4 cm (4.5 inches)
Height 6.4 cm (2.5 inches)
Color OD with yellow markings
86
PRESSURE
PLATE
^
w
I FN
FUZE
FUZE WELL
US. ANTITANK MINE MIAI
us ANTITANK MINE MlAl
This antitank mine is a World War II American mine. Stenciled in
yellow on the top is the identification "MINE MlAl - TNT" along with the
date of manufacture and the lot number. The Chinese Communists make a
copy of this mine with a larger fuze well and a somewhat different pres-
sure plate.
FUNCTION. Approximately 92 kg (200 lbs) of pressure on the pressure
plate will cause the shear pin in the fuze to shear off, allowing the
firing pin to strike the primer and causing detonation of the mine.
CHARACTERISTICS
Color OD with yellow markings
Weight 5.3 kg (11.5 lbs)
Diameter 20.3 cm (8 inches)
Height 7.6 cm (3 inches)
Filler TNT
88
SOVIET ANTITANK MINE TM-41
89
SOVIET ANTITANK MINE TM-41
This mine is made of blued steel metal, often painted white or dark
OD. This is a pressure type mine and is employed slightly beneath the
surface of the ground. It can remain operational for many months when
it is water proofed.
FUNCTIONING. A force of 161 kg (350) pounds) pressure on the lid
of the mine case will activate the pressure type firing devices beneath
the pressure cap.
DISARMING. Check for boobytraps. Unscrew the pressure cap. Gently
pull out the fuze with its attached detonator. A blasting cap is attached
to this fuze.
CHARACTERISTICS
Weight 5.5 kg (12 pounds)
Weight of explosive. . 3.6 kg (8 pounds)
Height 13.3 cm (5.2 inches)
Diameter 25.4 cm (10 inches)
90
SOVIET ANTITANK MINE TMB-2
91
SOVIET ANTITANK MINE TMB-2
This mine is of the Soviet standard type of non-metallic antitank
mine. It is laid separately or together with metallic and wooden mines
It cannot be detected by a mine detector.
CH/iRACTERISTICS
Mine Case Tar impregnated cardboard
Color Black or Brown
Height 15.3 cm (6 inches)
Diameter 27.5 cm (10-3/4 inches)
Weight 7 kg (15.4 pounds)
Weight of explosive . . 4.9 kg (U pounds) of amatol
CHICOM ANTIPERSONNEL 6 ANTITANK MINE NO. 8
93
CHICOM ANTIPERSONNEL AND ANTITANK MINE NUMBER 8
Some of these mines were located in Korea, but their use was limited.
The use of this mine in Vietnam should be anticipated.
FUNCTIONING. Approximately 138 kg (300 pounds) of pressure on the
center of the spider (less pressure if applied to the edge of the spider)
causes the igniter to function and the mine to detonate. The fuze of this
mine can also be fired by a pull of 4.6 to 23.0 kg (10 to 50 pounds) on
the spider. Extreme caution should be exercised if the mine is lifted
for removal .
DISARMING Check for boobytraps. Cut any slack trip wires that are
connected to the mine. Insert the safety bar into the slot on the side
of the fuze. If the bar is not available, carefully remove the spider
and unscrew the fuze.
CAUTION. It is extremely hazardous to remove these mines It is
recommended that whenever possible, they be destroyed in place or eaqplo-
sive ordnance disposal personnel be notified.
CHARACTERISTICS
Weight 5.4 kg (12 pounds)
Weight of explosive . . 2.3 kg (5 pounds)
Diameter 228.6 mm (9 inches)
Height 101.6 mm (4 inches)
94
PRESSURE
PLATE
FUZE
¥
/
SAFETY
FORK
CHICOM ANTITANK MINE
95
CHICOM ANTITANK MINE
This antitank mine is supplied to the VC by the Chinese Communists.
It is similar to a pre-World War II American mine and is often mistaken
for this mine. The mine has stenciled in yellow on the top "MINE MlAl -
TNT."
FUNCTIONING. Approximately 92 kg (200 pounds) of pressure on the
pressure plate will cause the shear pin in the fuze to shear off and
allow the firing pin to strike the primer, causing detonation of the
mine .
DISARMING. Remove all soil from around the mine prior to de fuzing,
Rotate the pressure plate until the fingers disengage the mine body.
Carefully lift the pressure plate out of the way. Remove the fuze by
lifting it out of the fuze well. Replace the safety fork if present,
CHARACTERISTICS
Color OD with yellow markings
Weight 5.3 kg (11.5 pounds)
Diameter 20.3 cm (8 inches)
Height 7.6 cm (3 inches)
Filler TNT
96
VC FIXED DIRECTIONAL
FRAGMENTATION MINE DH- 10
6.9 KG
5.5 KG
9.2 KG
97
VC FIXED DIRECTIONAL FRAGMENTATION MINE (DH-10)
The DH-10 mine has characteristics similar to the US M- 18 "Claymore."
The DH-10 is designed as an antipersonnel weapon and may be used in
ambushes against massed infantry attacks, against lightly armored ve-
hicles, and against helicopters during the landing of troops. The mine
stand is so constructed that the mine can be rotated on its axis and aimed
in the direction of the target.
FUNCTIONING. The DH-10 is placed and aimed in the direction of the
target. An electrical detonator is located in the fuze well in the front
or rear center of the mine. Wires from the detonator are connected to a
battery pack or hand-held generator located a safe distance from the mine.
Although the DH-10 is designed for electrical operation, it would be very
simple to incorporate a mechanical fuze.
DISARMING. Cut the electrical leads, one at a time , approximately
15 cm (6 inches) from the mine body. Remove the detonator.
CHARACTERISTICS
Diameter 20, 24 or 28.6 cm (7, 9 or 11.75
inches)
Weight 5.5, 6.9 or 9.2 kg (12, 15 or 20
pounds)
Weight of explosive . . 1.8, 2.8, 3.7 kg (4, 6, 8 pounds)
Filler TNT
Range 150 to 200 meters
Operation Electrical
98
US 5-GALLON OIL CAN TYPE MINE
99
VC 5 -GALLON OIL CAN TYPE MINE
This is a locally manufactured mine using a 5-gallon oil can as the
explosive container. The mine is usually employed with a watch or clock
as a timing device.
FUNCTIONING. The firing device consists of a battery pack of at
least 4.5 volts connected in series to two watches and two electrical
detonators. The minute and second hands of both watches have been cut
short and small holes drilled through the crystals at the number 12.
Brass screws are inserted into the holes and wires are connected from
them to the battery. Other wires run from the battery to the detonators,
The circuit is completed by running a third set of wires from the watch
cases to the detonators. The watches are wound and set to the selected
time. When the hour hands touch the brass screws inserted through the
crystals, the circuits are completed between the battery and the deton-
ators, resulting in detonation of the mine.
DISARMING. Cut the wires one at a time , either between the watches
and the battery or between the watches and the detonators. Remove the
batteries and the timing device. Destroy the mine or notify explosive
ordnance disposal personnel.
CHARACTERISTICS
Color OD or black
Type Homemade
Operation Electrical
Weight 10 kg (22 pounds)
Filler TNT
100
VC us .50 CALIBER AMMUNITION
BOX MINE
101
VC us .50 CALIBER AMMUNITION BOX MINE
This mine is constructed by filling a .50 caliber ammunition box with
various explosives. It can be used for mining roads or as a sabotage device.
This device may be detonated either electrically or non-electrically .
DISAEMING. This is an improvised mine and a standard fuze is not used;
therefore, no disarming procedure can be given. It is recommended that this
mine be blown in place.
CHARACTERISTICS
Weight 25 kg (55 pounds)
Size 50 cal ammo box
Fuze Electrical or non-electric
Type explosive .... C2, C3 or TNT
102
VC IMPROVISED MINE
4
I
103
VC IMPROVISED MINE
This command detonated mine is constructed of either cast iron or
concrete. It may vary from hand grenade size to 2 feet in length. It
has no identifiable markings.
EMPLOYMENT. This mine can be employed against personnel or vehicles
on trails and avenues of approach.
104
PYRAMID SHAPED MINE
LONG TYPE
105
PYRAMID SHAPED MINE, LONG TYPE
This mine, manufactured by the VC, comes in various sizes and shapes
It is a frustum of a pyramid or a box made of steel plates and held to-
gether with rivets. Both ends are closed. One end has a well for a
blasting cap. It has been found containing one part TNT and one part
black powder.
DISARMING. Cut the lead wires one at a time and then remove the
blasting cap.
106
VC IMPROVISED MINE
107
VC IMPROVISED MINE
This mine is made by using a tin can, TNT, and a BLU/3 as a pressure
fuze. The upper half of the metal can is bent down over the BLU/3 provi-
ding a large pressure plate. The lower half of the can is filled with
TNT or another explosive.
NOTE. The BLU/3 is a complete US Bomblet except that the fins have
been removed.
CHARACTERISTICS
Fuze BLU/3
Charge TNT
i Case Tin Can (5 gal)
108
VC MINE FT40
109
VC MINE FT 40
This mine is used for mining roads and demolition work. It is made
of steel and riveted together. It uses two electrical caps and is com-
mand detonated.
DISARMING. Cut the electrical leads one at a time ; then remove
electric caps from mine.
CHARACTERISTICS
Color Black
Weight 55 kg (121.25 pounds)
Explosive ...... Melinite, 38 kg (83.7 pounds)
Body Metal
Fuze Cap
110
VC CEMENT "TURTLE" MINE
^
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TOP WOODEN PLATE
Ill
VC CEMENT "TURTLE" MINE
This is a locally manufactured mine with a body constructed of cement.
The mine is usually employed as a demolition charge by being attached to a
long pole and placed against buildings and fortifications.
FUNCTIONING. The mine is fuzed both electrically and mechanically.
A hand grenade friction igniter is used as the non-electrical device.
DISARMING. Cut the electrical leads, one at a time, approximately
15 cm (6 inches) from the mine body. Remove the fuze by lifting the deto-
nator out of the fuze well. If non-electrical fuzing has been used, remove
the igniter, being careful not to disturb the friction pull ring. DO NOT
attempt to remove either type of fuzing if there are signs of corrosion
around the fuze or signs of tampering. Destroy the mine in place or notify
explosive ordnance disposal personnel.
CHARACTERISTICS
Color Gray
Weight 5.6 kg (13 pounds)
Length 22.9 cm (9 inches)
Diameter 12.7 cm (5 inches)
Filler TNT
Construction .... Cement
112
VC SHEET METAL "TURTLE" MINE
c
3
PERSPECTIVE
RIGHT VIEW
113
VC SHEET METAL "TURTLE" MINE
This "Turtle" tcine is constructed of four separate pieces of sheet
metal riveted together at the seams and coated with a waterproofing com-
pound. A detonator well is located in the end of the mine.
FUNCTIONING. This mine is fired both electrically and mechanically.
The electrical detonator is placed in the fuze well and sealed in the wax
or tar. The current for the detonator is supplied by a battery pack or
hand held generator. The mechanical device is usually a pull release
device operated remotely with a pull or trip wire.
DISARMING. Cut the two electrical leads, one at a time, approximately
15 cm (6 inches) from the mine body. Remove the detonator, if possible.
If a mechanical firing device is employed, replace the safety pin prior to
cutting any wires. Remove the firing device, if possible. If the mechan-
ical firing device or electrical device cannot be removed safely, DO NOT
transport or disturb the mine. Destroy the mine in place or notify explo-
sive ordnance disposal personnel.
CHARACTERISTICS
Color . Black
Weight ...... o 9 . 2 kg ( 20 pounds)
Filler Melinite or TNT
Weight of explosive . 3.2-3.7 kg (7-8 pounds)
Height 12.7-15.4 cm (5-6 inches)
114
HANDLE
BOOSTER
MAIN
CHARGE
HANDLE'-'
(CARRYING
LARGE VC
WATER MINE
115
L/iRGE VC WATER MINE
The water mine is composed of two parts, the explosives chamber and
the flotation chamber, separated by a sheet metal partition. The water
mine is employed against shipping in rivers and canals. The flotation
chamber built into the mine serves to ^^eep the; mine off the bottom and
suspended in midstream. The depth of the mine is controlled by a series
of ropes from the shore. The mine is constructed of medium veight sheet
metal with riveted seams. All seams are covered with a waterproofing
compound.
FUNCTIONING. The mine is fired electrically from the shore using
a series of batteries or a hand generator. With the approach of a ship
the mine is adjusted remotely to the proper depth to give the optimum
effect from the blast.
DISARMING. Cut all electrical leads leading to the mine, one at a
time, approximately 15 cm v6 inches) from the mine.
CHARACTERISTICS
Weight 38.2 kg (83 pounds)
Diameter . . ... 43.7 cm (17 inches)
Height . 63 cm ( 25 inches)
Filler TNT
Weight of Filler . . . 18.8 kg (41 pounds)
116
SMALL VC WATER
MINE
117
SMx.LL VC Wx.TER MINE
This locally manufactured water mine is of a type constructed of
sheet metal, rolled into a short conical shape, and fastened with rivets.
FUNCTIONING The mine is placed in the channel of the river or
stream and adjusted in height according to the traveling depth of ships
in that particular body of water. The mint is fuzed electrically and deto-
nated by means of a battery pack.
DISARMING. Cut all electrical leads leading to the mine, one at a
time, approximately 15 cm (6 inches) from the mine. DO NOT ATTEMPT TO
REMOVE THE BOOSTER CAP OR DETONATORS FROM THE MINE.
CE<:\R.\CT ERISTICS
Weight .......
Height ......
Diameter .....
Filler
Weight of explosive
12 4 kg (27 pounds )
32 cm (12 inches)
26.7 cm (11 inches^
TNT
6.9 kg (15 pounds)
VC ANTIPERSONNEL MINE
119
VC ANTIPERSONNEL MINE
This type of mine is constructed of a sheet metal container similar
to a beer can and employs a standard percussion grenade fuze. The fuze
usually contains no delay.
FUNCTIONING, A trip wire is attached to the pull ring on the gre-
nade fuze. When the pull pin attached to the pull ring is removed, the
striker moves downward, hitting the primer and causing the detonation of
the mine .
DISARMING. No attempt should be made to disarm this mine because
of the possibility of a hang fire. Destroy the mine in place or notify
explosive ordnance disposal personnel.
CHARACTERISTICS
Color Gray or green
Weight 0.9 kg (2 pounds)
Height 15.4 cm (6 inches)
Diameter 5 to 7.7 cm (2 to 3 inches)
Filler . TNT
Construction .... Sheet metal
120
VC SKYHORSE
121
VC SKYHORSE
This Improvised antipersonnel weapon is, in effect, a large sawed-
off shotgun or a small cannon loaded with shrapnel. It is made from a
piece of pipe about 5.1 centimeters (2 inches) in diameter and 32 to 96
centimeters ( 1 to 3 feet) long and closed at one end. The pipe contains
an explosive charge for expelling a load of rocks, glass, nails, or
barbed wire fragments, and the muzzle is sealed with wax. The weapon
is used to cover a road, trail, or any other route troops may take. It
has a simple mousetrap actuator, which may be fired by the enemy with a
lanyard or, more commonly, by the victim himself with a trip wire.
FUNCTIONING: The weapon is fired when the retainer is pulled and
the striker hits the detonator.
DISARMING: Check for booby traps. Fasten the striker arm down
with tape or wire, and place a piece of tape over the detonator to pre-
vent accidental firing.
122
EXPLOSIVE CHARGE
FUZE WELL WITH-/
WOODEN PLUG
PULL RING
CONCUSSION
GRENADE
FUZE WELL WITH
WOODEN PLUG
VC MINE IMPROVISED FROM SHELL
CASE
I
123
VC MINE IMPROVISED FROM SHELL CASE
This Improvised mine comprises a 75 to 105ram cartridge case filled
with explosive and one stick grenade for the primary detonator device.
Fuze wells have also been provided on the side of the shell casing; there-
fore, the improvised mine can be detonated by using any of the fuzes dis-
cussed in this booklet. The employment of these mines in most cases is
against personnel.
124
VC "TOE POPPER" MINE
125
VC "TOE POPPER" MINE
These mines are fabricated of cartridge cases or pieces of pipe of
various sizes, loaded with "homemade" primers and a charge of black
powder. When the victim steps on the mine the igniter explodes the charge
and the "buckshot" projectiles are expelled with considerable force.
126
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VC CYLINDRICAL CEMENT
FRAGMENTATION MINE
127
VC CYLINDRICAL CEMENT FRAGMENTATION MINE
This locally manufactured cylindrical mine is constructed of cement
It Incorporates a carrying handle fabricated of a 5.1 cm (2 inch) piece
of pipe. The pipe also serves as the housing for the detonator.
FUNCTIONING. The mine is fuzed with an electrical detonator. It
is usually fired remotely from a battery pack or hand held generator.
DISARMING. Cut the electrical leads, one at a time, approximately
15 cm (6 inches) from the body. Remove the detonators by lifting from
the fuze wells. DO NOT force the detonators.
CHARACTERISTICS
Color Gray
Weight 5.6 kg (13 pounds)
Length 25.4 cm (10 inches)
Height 12.7 cm (5 inches)
Filler TNT
Construction Iron pipe and cement
128
LATHED WOOD
CAST IRO
CARRYING ROPE
VC CYLINDRICAL CAST IRON
FRAGMENTATION MINE
129
VC CYLINDRICAL CAST IRON FRAGMENTATION MINE
This mine is constructed of cast iron and is filled with cast TNT.
The mine is similar to a stick grenade. It employs a friction igniter
with a 4- second delay as the detonator device.
FUNCTIONING. A trip wire is attached to the pull wire of the fric-
tion igniter. Pressure applied to the trip wire will extract th^ pull
wire through a match compound, igniting the delay element. Two to four
seconds after the extraction of the pull wire the mine will detonate.
DISARMING. If the pull wire is present, the mine is safe. If the
pull wire is missing, the mine should be considered a dud and treated
accordingly .
CHARACTERISTICS
Color Gray or black
Weight 1 kg (2.2 pounds)
Diameter 5.1 cm (2 inches)
Filler TNT
Operation Friction pull
130
FUZE WELL
PULL WIRE
FRICTION FUZE
VC CYLINDRICAL MINE
131
VC CYLINDRICAL MINE
This locally manufactured mine is constructed of sheet metal or
shipping containers for artillery and mortar projectiles. The mine's
weight and size vary according to the type of container used. This mine
can be fired electrically or mechanically.
FUNCTIONING. The electric detonator is placed in the fuze well and
sealed with wax or tar- Current is supplied by a battery or hand-held
generator. The alternative mechanical firing device is usually a fric-
tion igniter, which can be command detonated by a pull wire or rigged
with a trip wire.
DISAKMINGo Electrical: Cut the electrical leads, one at a time,
approximately 15 cm (6 inches) from the mine body. Remove the detonator,
if possible. DO NOT force the detonator when removing. Mechanical: If
the pull wire is present, the mine is safe. If the pull wire is missing,
the mine should be considered a dud and treated accordingly.
CHARACTERISTICS
Color ....... Varies
Length ...... Varies
Operation .... Electrical or mechanical
Filler Any of the military explo-
sives, potassium chlorate
or TNT
132
VC IMPROVISED ANTIPERSONNEL & ANTITANK MINE
133
VC IMPROVISED ANTIPERSONNEL AND ANTITANK MINE
This type of mine is improvised from dud artillery and mortar pro-
jectiles. Depending on its size and explosive filler, it is effective
against both armored vehicles and personnel. This mine is usually
employed along the sides of roads and trails and detonated remotely.
FUNCTIONING. The projectile fuze is removed and a hole is drilled
into the explosive to accept an electrical detonator. The mine is deto-
nated remotely by an electrical charge from a battery pack or hand held
generator.
DISARMING. Cut the electrical leads to the detonator, one at a time,
approximately 15 cm (6 inches) from the projectile or mine. This mine
should be destroyed in place or explosive ordnance disposal personnel
should be notified.
CHARACTERISTICS
Color Varies
Weight Varies
Explosive TNT or any type of military
explosive may be found in
these types of improvised mines
FRONT VIEW
134
FUZE WELL
TOP VIEW
!»!
VC CAST IRON FRAGMENTATION
CAST IRON ANTITANK MINE
135
VC CAST IRON FRAGMENTATION ANTITANK MINE
This egg shaped mine is constructed of cast iron with serrations
on its outer surface. The mine incorporates a handle for carrying. The
detonator well is located in the end.
FUNCTIONING. The mine is fuzed with an electrical detonator and is
controlled remotely. Current for the detonator is supplied by a battery
pack or hand held generator.
DISARMING. Cut the electrical detonator leads, one at a time, approxi-
mately 15 cm (6 inches) from the mine. Remove the detonators if possible.
CHARACTERISTICS
Color Gray
Weight 5.5 kg (12 pounds)
Length 22.9 cm (9 inches)
Diameter 12.7 cm (5 inches)
Filler Melinite or TNT
Operation Electrical
136
ARRYING ROPE
LIFTING EYE
DETONATOR LEAD
VC "MOUND" SHAPED MINE
137
VC "MOUND" SHAPED MINE
This mine is constructed of cement and is similar to other mines
covered in this booklet.
FUNCTIONING. The mine is fuzed electrically and incorporates one
detonator well encased in an iron pipe. The pipe is located in the end
of the mine housing. The detonator is placed in the pipe fuze well and
is sealed with a waterproofing compound. The mine is fired by means of
a battery pack or hand held generator.
DISARMING. Cut the two electrical leads, one at a time, approxi-
mately 15 cm (6 inches) from the body of the mine. Remove the detonator,
if possible. DO NOT force the detonator out of the fuze well.
CHARACTERISTICS
Color Gray
Weight 6 kg ( 13 pounds)
Length 34.9 cm (13 3/4 inches)
Diameter 14 cm (5^ inches)
Filler TNT
Operation Electrical
138
DETONATOR
DETONATOR LEAD
VC ROUND VOLUME MINE
139
VC ROUND VOLUME MINE
This mine is constructed of sheet metal with all seams welded.
FUNCTIONING. The mine is fuzed electrically and employs two
detonators located in the ends of the mine. The mine is fired by
means of a battery pack or hand held generator.
DISARMING. Cut the leads to the detonators, one at a time, 15 cm
(6 inches) from the mine. Remove the detonator, if possible. Otherwise,
destroy the mine in place or notify explosive ordnance disposal personnel
CHARACTERISTICS
Color Dark Green
Length 43 cm ( 17 inches)
Diameter 11.5 cm (5 inches)
Operation Electrical
Overall weight .... 7 kg ( 15 pounds)
Weight of explosive charge 6 kg ( 13 pounds)
Type of explosive charge. Melinite
140
MODIFIED BLU/3 BOMBLET
O o o
o
^ ^cjj*
O CP
o
o
£? ^
> o O
o
o ^r o 1
o <o <^
o
o
O " <? (
G O <=>
CO
ca
c? ^^c
o o O
o o
CP O
Oi "O
0 o
c> o 0\
O O
o
o
° 0 /
141
MODIFIED BLU/3 BOMBLET
The BLU/3 Air Force Bomblet is being picked up by the NVA-VC,
being stripped dovm, and rigged with a pull-release device which fires
instantaneously. A prefabricated metal stand, approximately 16 cm high,
is attached to the bottom of the bomblet. The firing device used is the
standard CHICOM grenade fuze rigged with a pull ring and trip wire.
FUNCTION. When pin is pulled, a spring loaded firing pin is driven
into the detonator, firing the round.
CHARACTERISTICS
Markings None on fuze; all markings on bomblet
are US.
Fuzing Pull-release, instantaneous
CAUTION. When found, the area around the bomblet should be care-
fully checked. BLU/3 bomblets are also being used as antipersonnel
mines. They are buried in the ground and the standard bomblet fuze serves
as a pressure actuated device.
142
VC NON-ELECTRICAL
SHAPED CHARGE
MINE
143
VC NON-ELECTRICAL SHAPED CHARGE MINE
T!:is mine is constructed of sheet metal and employs a sheet metal
cone for a shaped charge effect. The mine is employed with two friction
pull igniters incorporating a nine second delay. The mine is usually
employed as a demolition device by VC saboteurs.
FUNCTIONING. The mine is placed at the target and the two pull
wires on the fuze are extracted. This action initiates the nine second
delay powder train. The delay train flashes to the detonator, causing
detonation of the mine.
DISARMING. No attempt should be made to disarm this mine since
boobytraps are sometimes built into the fuzing mechanism. Destroy the
mine in place or notify explosive ordnance disposal personnel.
CHARACTERISTICS
Color Varies
Length 20.3 cm (8 inches)
Diameter at widest point 22.9 cm (9 inches)
Weight 6.9 kg (15 pounds)
Filler TNT or very sensitive
homemade explosives
Weight of explosive . . 3.7-6.9 kg (9 pounds)
144
VC ELECTRICAL ANTIVEHICULAR
SHAPED CHARGE MINE
145
VC ELECTRICAL ANTIVEHICULAR SHAPED CHARGE MINE
This short, pyramidal shaped charge is employed against armored
vehicles and reinforced fortifications. It is constructed of sheet metal
and fastened at the seams by rivets or welding.
FUNCTIONING. This mine is usually detonated electrically from an
ambush position.
DISARMING. Cut the electrical leads leading into the fuze of the
mine, one at a time, approximately 15 cm (6 inches) from the fuze. In
case of a mechanical fuze, replace the safety pin. If the type of fuze
cannot be determined destroy the mine in place or notify explosive ord-
nance disposal personnel.
CHARACTERISTICS
Color Black
Weight 7.8 kg (17-18 pounds)
Diameter 20.3-25.4 cm (8-10 inches)
Length 20.3-25.4 cm (8-10 inches)
Filler TNT
Weight of explosive . . 5.1 kg (11 pounds)
146
METAL CAP
SHAPED METAL
CONE
MELINITE CHARGE
MELINITE CHARGE
POWDER
PRIMER
FIRING
INSULATION PART
PROPELLING —
CHARGE
STEEL CONE
SHAPED CAP
STEEL BODY
FUZE
SAFETY SPRING
SAFETY PIN
PAPER DISC
GITER CHARGE
•CAP, BLASTING, ELECTRIC
VC BOUNDING BAXOMINE SHAPED CHARGE MINE
147
VC BOUNDING BAXOMINE SHAPED CHARGE MINE
This is a shaped charge mine employed as an antitank or antivehicular
mine. This mine is constructed of steel pipe riveted to a metal base.
FUNCTION. This type bounding mine is placed in a container after
the safety pin has been removed. The functioning of the electric blast-
ing cap will make the propelling charge explode and propell the mine up-
wards. When the mine hits something the firing pin will hit the primer,
exploding the main charge.
DISARMING. Cut all electrical leads leading to the mine one at
time, and remove the blasting cap.
CHARACTERISTICS
Weight
Diameter of mine
Height
Diameter of body
Height of body .
Body of mine . .
Cap for mine . .
Bursting Charge
Approx 2.0 kg (4.4 pounds)
15 cm (5.5 inches)
25 cm (9.8 inches)
17 cm (6.7 Inches)
30 cm (11.8 inches)
Steel
Cast Iron
Composition of melinite
148
VC IMPROVISED SHAPED CHARGE
149
VC IMPROVISED SH/.PED CHARGE
This is an improvised shaped charge made of copper metal. It is
used for sabotage or against personnel in an ambush. Detonation is by
either electrical or non-electrical firing device.
CHARACTERISTICS
Color Black
Weight 5.05 kg (11 pounds)
Explosive charge . . . TNT
Body Copper
150
CHiCOM GRENADE
151
CHICOM GRENADE
This grenade is the CHICOM copy of the Russian RCD-5 grenade which
resembles the US M-26 grenade. This is a fragmentation type grenade
with an egg-shaped sheet metal body which incloses a smooth fragmenta-
tion liner.
FUNCTION. Safety lever and striker are under spring tension. With
safety pin removed, the spring tension releases the safety lever permitting
the firing pin to be driven into the primer.
CHARACTERISTICS
Type Fragmentation
Weight 3.2 kg (6.8 pounds)
Height 11.4 cm (4.5 inches)
Maximum dia 5.3 cm (2.1 inches)
Body Sheet metal
Filler TNT
Filler weight 110 grams (3.9 ounces)
Fuze delay 3 to 4 seconds
152
MODIFIED VC GRENADE
153
MCDIFIED VC GRENADE
VC grenades containing instantaneous firing elements have been
tested and found to fire immediately upon release of the firing pin.
Items shown on the previous page were marked on top of the fuze section
with a red paint dot. It should be assumed that all VC or CHICOM
grenades bearing any paint markings contain instantaneous firing elements
and are to be handled accordingly.
DISARMING.
Blow in place
PULL STRING
BODY'
154
SAFETY FUSE
DELAY
RICTION DEVICE
V
SHRAPNEL
(GLASS, STONES
OR CROCKERY)
-TNT BLOCK
■l-DETONATOR
EXPLOSIVE DEVICE (FRAGMENTATIOJSI)
155
EXPLOSIVE DEVICE
(Fragmentation)
This device is designed to be employed as a hand grenade or anti-
personnel mine. The body consists of a cylindrical container of light
sheet metal or tin with end pieces that are secured by crimping.
FUNCTION. Initiating Device, pull friction (coated wire and match
composition). A 3 to 4 second French Safety fuze is used for delay.
This device contains no booster; the charge is made from shaved blocks
of French cast explosive and TNT. Fragments are of glass, pottery, or
metal located between the explosive and the walls of the body. A rapid
and continuous pull on the string will ignite the safety fuze. Used
as an antipersonnel mine, the charge is secured to the ground or an
object and a trip wire is attached to the string.
DISARMING. The fact that these items are hand made from various
sources requires that extreme caution be used at all times while handling >
CHARACTERISTICS
Height 11.4 cm (4^ inches)
Width 6.3 cm (2^ inches)
Body ........ TNT
1
HANDLE
'SAFETY PIN
156
SHAPED CHARGE
t
VC FOUR-SIDED SHAPED CHARGE HAND GRENADE
157
VC FOUR- SIDED SHAPED CHARGE HAND GRENADE
This grenade may be throx^m, placed or used as a boobytrap. The
grenade is cylindrical in shape and is constructed by soldering a shaped
insert to the bottom and then attaching the sides and top. The insert
is made of one piece of metal.
FUNCTIONING. Upon removal of the safety pin, the grenade is thrown.
The handle, upon release, allows the cocked striker to hit the delay ig-
niter. The delay sets off the detonatoL- which sets off the main charge.
The four- sided shaped charge concentrates the force of the explosion away
from the center of the grenade, increasing its ability to inflict casual-
ties.
DISARMING. If the safety lever and safety pin are in place, remove
to a safe disposal area for destruction. In any other condition, blow in
place.
CHARACTERISTICS
Color OD
Shaped charge .... HE, crushed or powdered tritonal
Markings None on body; letters AT on fuze
Fuze material .... Pot metal with steel handle VC
Height 15.8 cm (6^ inches)
Width 7.9 cm (3 1/8 inches)
Body 0.3 cm (1/8-inch steel)
Weight Varies
158
CONE CAVITY!
LINER
BURSTING
CHARGE
ETONATOR
BOOSTER
ASSEMBLY
FIRING PIN Sr
SPRING
STABILIZING
CLOTH
SOVIET ANTITANK HAND GRENADE, TYPE RPG-6
159
SOVIET ANTITANK HAND GRENADE, TYPE RPG- 6
This antitank hand grenade, RPG- 6, is a shaped charge type grenade
which can be used against personnel because of its fragmentation effect.
For this reason the grenade is thrown from cover.
In throwing, the grenade handle and safety lever are held tightly
in one hand and the safety pin is pulled with the other. When thrown,
the grenade is stabilized by four pieces of parachute cloth that fly out
of the handle as the safety lever is ejected.
This grenade explodes on impact. Unlike the RPG-3, this grenade
has a crescent- shaped head and its handle is made of sheet metal instead
of wood.
CHARACTERISTICS
Type HE
Use Antitank and antibunker
Weight, incl. fuze .... 1.02 kg (2.4 pounds)
Overall length 343 mm (13.5 inches)
Fuze ..... Impact
Avg. throwing distance . , 18 meters (19 yards)
Penetration 100 mm (3.94 inches)
Fragmentation radius ... 20 meters (21 yards, approx.)
160
STABILIZING
CLOTH
DETONATOR
BOOSTER
ASSEMBLY
BURSTING
CHARGE
FIRING PIN
& SPRING
CONE CAVITY
LINER
SOVIET RPG-43 ANTI-TANK
HAND GRENADE
161
SOVIET RPG-43 ANTITANK HaND GRENADE
The RPG-43 hand grenade is an antitank grenade that is also used
against armored cars and fortified positions. It is characterized by a
large cylindrical body, wooden handle and steel parachute cone. The gre-
nade explodes upon impact and has an equilibrium device to insure that the
grenade strikes on its head. This device consists of a steel cone and two
pieces of cloth that trail behind the grenade when it is thrown-
CHARACTERISTICS
Type HE
Use ....... Against tanks, fortifications
Weight (including fuze) • . 1.203 kg (2.65 lbs)
Overall length 30 cm (11.78 inches)
Fuze Impact
Fragmentation radius .... 22 yards
162
FRAGMENTATION SLEEVE
SOVIET RGD-33
DEFENSIVE aOFFENSIVE HAND GRENADE
163
SOVIET RDG-33 OFFENSIVE & DEFENSIVE HAND GRENADE
The RGD-33 offensive/defensive hand grenade is a dual purpose grenade -
As an offensive grenade, it has a 5-5 yard lethal radius. By adding a frag-
mentation sleeve, it becomes a defensive grenade which has a 27 yard lethal
radius. This sheet metal grenade is normally painted olive brown.
The grenade i"? thrown vigorously. A spring in the handle forces the
body back quickly and the firing pin strikes the primer actuating the delay
e lement
CAUTION. Duds are dangerous and should be destroyed in place as the
slightest vibration may set them off,
CHARACTERISTICS
Offensive grenade
Weight . ..... 0.496 kg (1.1 pounds)
Length 190mm (7.5 inches)
Diameter 45ram (1 7 inches) . .
Effective frag radius 5 meters (6 yards)
Time fuze ..... 3-4 sec/delay . . . .
Defensive grenade
0.659 kg (1.7 pounds)
190mm (7.5 inches)
52mm (2.1 inches)
25 meters (27 yards)
3-4 sec/delay
164
-BURSTING CHARGE
GRENADE
SOVIET DEFENSIVE HAND GRENADE
TYPE F-l
165
SOVIET DEFENSIVE HAND GRENADE TYPE F.l
The F.l type hand grenade is similar in appearance and operations to
those of the US MK.2 grenade. Its case is of serrated cast iron and painted
olive drab
To use, the grenade body, with safety lever, is held with one hand and
its safety pin is pulled with the other When thrown, the safety lever of
the grenade springs up, loosening the spring of the firing pin which ignites
the primer. This initiates the delay fuze which explodes the grenade.
CHARACTERISTICS
Type . . . ,
Use . .
Weight . •
Length . . .
Diameter . -
Fuze delay .
Average throwing range
Effective fragmentation
radius
Defensive, serrated cast iron
Antipersonnel
0.690 kg (1.54 pounds)
124mm (4,87 inches)
55mm (2.1 inches)
3 to 5 seconds
33 to 45 m (34 to 47 yds, approx
14 meters (16 yards, approx)
166
SOVIET RPG-40 HAND GRENADE
167
SOVIET RPG-40 HAND GRENADE
This grenade is normally used against lightly armored vehicles. It
is made of sheet metal and contains a TNT charge. The primer -detonator is
inserted into the grenade before the grenade is thrown. The igniting device
is placed inside the handle of the grenade which is tightly screwed into
the top of the grenade . When the safety pin is removed and the safety lever
released, the grenade is in the armed position.
CAUTION. Under no circunstances should dud grenades of this type be
picked up as the fuze is armed and the slightest vibration will set it off.
CHARACTERISTICS
Type . Offensive
Use Antitank
Weight . 1,205 kg (2.7 pounds)
Length . . 200mm (7.87 inches)
Diameter 95mm (3.75 inches)
Effective fragmentation radius . 20 meters (22 yards)
Fuze type ....... Impact/ instantaneous
168
UZE BODY
ETONATOR
'N
BURSTING
CHARGE
GRENADE BODY
SOVIET OFFENSIVE HAND GRENADE
TYPE RG-42
169
SOVIET OFFENSIVE HAND GRENADE TYPE RG-42
This grenade has a sheet metal cylindrical body containing 99 grams
of TNT.
To throw the grenade, the safety lever is held tightly against the
grenade body with one hand and the safety pin is pulled with the other.
When the grenade is thrown, the safety lever will spring upward and leave
the grenade body. The firing pin strikes the primer which ignites the time
fuze and sets off the grenade.
CHARACTERISTICS
Type .....
Use
Weight ....
Overall length
Diameter . .
Time delay . .
Average throwing range
Dangerous radius . . .
Offensive
Antipersonnel
400 grams (.88 pounds)
127mm (5 inches)
53mm (2.2 inches)
3-4 seconds
30 to 40 m (32-42 yards, approx)
15 to 20 m (16-22 yards, approx)
170
A. TIMING DEVICE & BATTERIES
B. EXPLOSIVE
C. DETONATOR
D. ELECTRICAL WIRES
VC BICYCLE MINE
171
VC BICYCLE MINE
This bicycle is used as a sabotage device. It is fuzed and fired
electrically by means of a watch time delay device or by means of the
bicycle generator.
FUNCTIONING. The explosives within the bicycle frame will detonate
when the preset time on the watch delay device has expired, or when the
bicycle generator is placed in the circuitry and the bicycle is operated
at sufficient speed to generate the required current.
CAUTION. Never rotate the wheels, push, or ride a bicycle suspected
of being mined. DO NOT attempt to remove the detonators or dissemble any
part of the bicycle.
DISAEMING. Cut all wires located on the external part of the frame
and head lamp assembly. Place the generator away from the wheel. Destroy
the mine or notify explosive ordnance disposal personnel for assistance.
172
US. BUTTERFLY BOMB
(BOMB, FRAGMENTATION M83)
173
US BUTTERFLY BOMB (Bomb, Fragmentation M83)
Although the butterfly bomb is not classified as a mine, its function-
ing is sometimes similar to that of a mine. Butterfly bombs may be found
in areas formerly occupied by the enemy. They can be fitted with several
different types of fuzes. Some explode in the air, some upon impact and
some have time fuzes which may be set from one to thirty minutes. Others
may be set to explode when bumped or touched. Sometimes even the ground
vibrations of a person walking nearby will detonate one of these bombs.
If you see one of these bombs --DO NOT GO NEAR IT -- DO NOT TOUCH
IT -- LEAVE IT ALONE. Warn those in your vicinity and notify the proper
authority so that an explosive ordnance disposal specialist may be called.
Only explosive ordnance disposal personnel may remove or dispose of these
bombs .
CHARACTERISTICS
Weight 1.8 kg (4 pounds)
Filler ........ TNT
Color OD with yellow markings
174
¥ff>,^%^
2 0 0^
CHICOM TNT DEMOLITION BLOCK
175
CHICOM TNT DEMOLITION BLOCK
The Chicom TNT demolition block is rectangular in shape, yellow in
color and comes in 200 and 400 grams (.44 and .88 pounds) sizes. It is
wrapped in waxed paper with a detonator well in the end of the block. The
detonator well is marked on the waxed paper by a black dot. This explosive
is commonly used by the VC.
FUNCTIONING. The TNT block can be fired by any of the standard or
improvised firing devices.
CHARACTERISTICS
Color Yellow
Weight 200 or 400 grams (.44 or .88 pounds)
Size 4.5 x 2.5 x 10.2 cm (13/4x1x4
inches)
176
TT?EGCOBAHHWW
Bee 400 rpaMM
SOVIET TNT DEMOLITION BLOCK
177
SOVIET TNT DEMOLITION BLOCK
The Soviet TNT demolition block is rectangular and has a detonator
well in the end of the block. It is covered with waxed paper having an
inscription in Russian as to the contents. This demolition block is used
as a booster block for all demolition work. Its use by the VC should be
anticipated.
FUNCTIONING. The block can be fired by any of the standard or impro-
vised firing devices.
CHARACTERISTICS
Weight 0.4 kg (.96 pounds)
Size 5.1 X 5.1 X 10.2 cm (2 x 2 x 4
inches)
178
CHICOM RED PHOSPHROUS
179
CHICOM RED PHOSPHORUS
CHICOM red phosphorus is a powder type product having only slight sen-
sitivity. The temperature required to burn in air is 260 degrees C At
normal temperature, this substance, when mixed with potassium chlorate or
potassium nitrate, increases the sensitivity-
A mixture of red phosphorus and potassium chlorate or potassium ni-
trate is used as an explosive filler in mines, grenades, flying bombs and
mortar and artillery shells. This mixture will provide a thick screen of
smoke and a mild explosive effect.
CHARACTERISTICS
Case . o Sheet metal
Color . Gray
Dimensions . . . . . 23xl5xl5cm(9x6x6in)
Net weight ..... 5 kg
Markings Label "Red Horse" in English
and Chinese characters
180
VC SATCHEL CHARGE
181
VU SATCHEL CHARGE
This VC charge is made from waterproof cloth, rope, wire or bamboo
strips, 2.3 to 4.6 kg (5 to 10 pounds) of explosive, and the detonator is
in the handle of a stick grenade. Extreme caution must be exercised when
handling these charges, because potassitim chlorate, a sensitive explosive,
may be found in them.
EMPLOYMENT. These charges have been used for destroying bunkers and
fortifications during enemy assaults and for other types of demolition work.
182
BANGALORE TORPEDO
<# call?
^
183
BANGALORE TORPEDO
!i'
Although the bangalore torpedo was designed originally for the breach-
ing of barbed wire defenses, the VC have made extensive use of it as an
antitank and an antipersonnel mine
The illustration gives an idea of the general construction of a banga-
lore Other types of bangalores are being used by the VC, including locally
constructed types. The appearance and the construction of all of these
bangalores are generally the same.
EMPLOYMENT Enemy troops lay the torpedos on a likely vehicle or troop
approach They conceal themselves some 12 to 15 meters away in foxholes,
and upon the approach of vehicles or assaulting troops the VC detonate the
torpedo •
DISARMING In disarming these objects, cut any wire attached to the
fuze. If a safety pin hole exists, place a small nail or piece of strong
wire in it.
184
BAMBOO BANGALORE
BAMBOO
WIRE OR TAPE-
ELEC - CAP EXPLOSIVE 'CHARGE
i
185
BAMBOO BANGALORE
This device is a simple, inexpensive type of bangalore torpedo.
It utilizes blocks of Tl\T wrapped with tarpaulin and reinforced by bamboo
sticks
FUNCTIONING Blocks of TNT are placed end to end and wrapped in tar-
paulin Two bamboo sticks are used to reinforce the tarpaulin A wooden
plug is placed at one end and a blasting cap is placed in a hole of a TNT
b^ock at the other. Standard telephone wire is attached to the blasting
cap and laid some distance away. To detonate, the two ends of the wire are
put to 2 dry cell batteries of 1.5 volts.
186
SOVIET BLASTING MACHINE PM-2
187
SOVIET BLASTING MACHINE PM-2
The Soviet PM-2 blasting machine is designed to fire all types of elec-
trical blasting caps. It can fire 10 blasting caps simultaneously.
CHAP.ACTERISTICS
Case ' ' Metal
Height ....... 12.1 cm (4.75 inches)
Width ....... 9.2 cm (3.75 inches)
Weight ....... 2 kg (4.4 pounds)
188
CHICOM BLASTING MACHINE LA2B
sj,^
189
CHICOM BLASTING MACHINE LA 2B
The Chicom LA 2B blasting machine is used to detonate all types of
electrical blasting caps. It can detonate 10 blasting caps simultaneously,
CHARACTERISTICS
Case Metal
Height 17.0 cm (7 inches)
Width 14.0 cm (5.5 inches)
Weight 2.7 kg (5.5 pounds)
190
SPIKE TRAP BOX
TOP
191
SPIKE TRAP BOX
This trap is a wooden box made of boards which are joined together
with four corner posts The box has a separate wooden top, but is bottom-
less Barbed spikes are made of iron and placed in the bottom pointing
upward. This trap is usually set up on muddy roads to provide favorable
camouflage.
CHARACTERISTICS
Size
40 cm (15.7 inches) each side and
60 cm (23.6 inches) deep
192
SPIKE TRAP PIT
CROSS BEAM LOCK
193
SPIKE TRAP PIT
A trap pit is a large trap dox with a bamboo top. Stakes are made
of bamboo and covered with tin barbed tips. Trap pits ar usually dug at
curves on high roads. When a man steps on a pit, he will fall into it
and the top of the pit will turn on an axle to its former position During
normal periods (i.e. no operations are conducted in the area) the top of
the pit will be locked with a cross beam so that it can be traversed with-
out dang-^ ■~ ■ When a man falls into the pit he will be injured by barbed
stakes which cut his thighs and hips or stab him through the back.
CHARACTERISTICS
Size 4 meters (12.3 feet) each side
and 2.5 meters (8.3 feet) deep
im
194
TRAP BRIDGE
ij#t^%
wdM
CUT AT THE MIDDLE AND COVERED WITH MUD
195
TRAP BRIDGE
A trap bridge Is an old bridge across a ditch which is partially cut
at the middle- These cuts are covered with mud. Barbed stakes are laid
in the ditch. Sometimes the ditch is blocked at one end to retain the water
so that the spikes cannot be discovered. If the ditch is not blocked, steel
barbed spikes are driven into the ditch, level with the mud. Both sides
of the ditch may be lined with spikes. Trap bridges are used to hinder
the progress of search and clearing operations.
I
196
STEEL ARROW TRAP
PIECE OF WOOD
STEEL ARROW
PIECE OF BAMBOO
RUBBER BAND
ROAD
197
STEEL ARROW TRAP
This trap has a barrel made of a piece of bamboo 1 meter long. It
is fastened to a piece of wood with nails and wire. A 30 cm long steel
arrow is placed in the piece of bamboo with a rubber band attached to the
piec*= of wood. A catch to lock the rubber band is connected with a trip
wire The trip wire connected with the catch will be laid across a trail.
When a man hits the wire, the latch will be disengaged and the rubber band
will contract and push the steel forward to hit his stomach.
198
BAMBOO WHIP
TRIP WIRF
199
BAMBOO WHIP
A bamboo whip is a piece of bamboo one or more meters long. A trip
wire is used to bend the bamboo like a cross bow. One end of the bamboo
is mounted with spikes. When a man hits the wire, the cuirved bamboo will
strike him in the leg or stomach. Generally, the victim is hit suddenly
and cannot take time to defend himself. Camouflage of the whip is diffi-
cult because of the length of the bamboo.
200
BARBED SPIKE PLATE
TOP OF THE
BARBED SPIKE
PLATE
BOTTOM OF SPIKE WELDED
201
BARBED SPIKE PLATE
A barbed spike plate is made of two or more steel barbed spikes
fastened to a piece of wood- The spikes are strongly fastened and are
difficult to remove from the plate. When a man steps on the spike plate,
the spike may penetrate through his shoe and foot. To remove the spike
the barb must be cut off first.
202
GRASS
MINES
0 9 O
MINES
203
POINTED BAMBOO STAKES
These stakes are made of bamboo and are pointed at one end. They
are stuck into the ground and covered with grass. When a gun is fired or
a grenade is thrown, troops jump to the roadsides and impale themselves on
the stakes. These stakes are generally used along the road going into a
village and in ambush sites.
204
'GALVANIZED WIRE NET HINGE
WOODEN
FRAME \
COVERED FOR CAMOUFDUTr
ROTATING SPIKED TRENCH
205
ROTATING SPIKED TRENCH
This trap has an "automatic cover" When the point member of the
squad falls into the trap it closes itself, ready to trap others in the
squadv The pit is much like a punji pit with the exception of the cover.
A large galvanized wire net is fixed to a wooden frame and a piece of pipe
or wood crosses the frame giving a see-saw effect over the pit. The top
of the frame is well camouflaged to preclude discovery of the trap. When
the trap is stepped on it will swing and throw the victim into the pit. It
will return to its initial position, ready to operate again.
206
SPEAR TRAP
«?u?>-'-«--nS??«S»*SS;'.,-WVi
207
SPEAR TRAP
This trap is designed to be used in thick foliage utilizing a trip
wire or string, three spears, and a rock. When the wire or string is
pulled, the pin holding the spear in place is released and the spears
(tied together at the top) fall on the object directly below. The rock
is added to increase the pressure on the falling spears.
DISARM. Remove the rock and untie the spears, then cut the string.
CAUTION. Spear trap may be used in conjunction with spear launcher.
208
^
SPEAR LAUNCHER
ENTRANCE
209
SPEAR LAUNCHER
The throwing end of a spear is lashed to the free end of a horizontal
bamboo or wooden whip. This arrangement is placed along-side a trail.
When cocked, the free end of the lever or whip is bent away from the trail,
and the spear is pointed toward the trail with the shaft resting within the
forks of wooden guide stakes. The launcher is held in the cocked position
by a wooden pin and a locking ring attached to the trip wire. The trip
wire is extended from the locking ring across the trail and tied to a stake
or tree directly in front of the spear. Pressure applied in any direction
on the trip wire will release the locking pin and the spear will be launched,
Impaling anyone standing near the trip wire.
210
CARTRIDGE TRAP
CAMOUFLAGED BAMBOO SLAT
CARTRIDGE
PIECE OF
BAMBOO
NAIL OR FIRING PIN
(5MM)
WOODEN BOARD-
211
CARTRIDGE TRAP
This trap consists of a piece of bamboo and a cartridge. A nail is
driven into the bamboo 5mm from the bottom to act as a firing pin. A piece
of wood is fastened to the piece of bamboo to hold the nail The cartridge
will protrude 5 centimeters from the bamboo. The primer of the cartridge
is right above the head of the nail. When a man steps on this trap, the
cartridge will hit against the nail> explode, and hit him This trap is
generally installed in the ground on the shoulder of a road and along paths.
212
INSERT GRENADE
DEEP IN CAN
HAND GRENADE, SAFETY
PIN AND DELAY
ELEMENT REMOVED
ATTACH ANCHOR WIRE TO FIXED OBJECT
TYPICAL GRENADES
213
GRENADE TRAP
There aie several methods of employing grenades as boobytraps . The
more common ones are given here, but the employment of this type of booby-
trap is limited only by the user's ingenuity and the materials at hand.
The illustration shows some typical grenades used and one of the most
common devices. A grenade is placed in a can, the safety pin is removed
and a trip wire is attached to the grenade. When the victim hits the trip
wire, the grenade is pulled from the can and explodes- Normally a zero
time delay fuze is used- Another common method is to weight the lever of
a grenade with some object and pull the safety pin. When the victim picks
up the object the grenade explodes. Tying a wire to the pull ring on a
grenade and securing the grenade to an object is also used. When the vic-
tim hits the wire, the ring is pulled and the grenade explodes.
These traps are laid on both sides of routes that troops are likely
to use. They have also been placed in hens' nests, bunches of bananas,
low hanging coconut palms, orange trees, under boxes, tied to tree trunks,
and at both ends of foot bridges. In the last case the hand rail can be
rigged to a trip wire.
GRENADE TRAPS ARE COMMONLY ENCOUNTERED IN AREAS VACATED BY THE VC.
214
VC BANNER ACROSS ROAD
ENDS OF POLES MAY BE BOOBYTRAPPED OR MINED
FIRING
DEVICE
EXPLOSIVE
215
VC BANNER
This is a booby trap that is very effective. On the surface it appears
to be a VC banner stretched between two poles. However, the ends of the
poles are attached to firing devices such as the pull or pressure-release
types. When a soldier tries to pull up the poles to tear down the banner,
the explosive charges are detonated. This type of trap must be carefully
approached because the area around it may also be mined.
216
PORTABLE CONCRETE AND STEEL PUNJI TRAP
PRESSURE RELEASE
217
BOOBYTRAPPED PUNJI STICKS
Punji sticks are embedded in cement or a heavy metal block and placed
in a camouflaged hole A pressure release fuze is attached to a grenade or
demolitions and placed under the block holding the punji sticks By removing
an injured man from the hole and picking up the block, the pressure release
fuze detonates the grenade or demolitions.
218
BOOBYTRAP GATEWAY
W^IRE ^^
/ y ■
219
BOOBYTRAP GATEWAY
A grenade is buried just below the surface of the ground and a short
trip wire is attached from the gate to the ground. The grenade detonates
when the gate is opened Where a pressure release fuze is used, the grenade
and fuze are placed directly under one of the uprights of the gate. The
grenade detonates when the upright is moved in any direction. If there is
heavy growth around the gate, the grenade will usually be hidden in the growth.
220
I TREE OR FORKED STAKE
TRIP WIRE J
-^mHOR- STAKE
BOOBYTRAPPED BOMBLET
221
BOOBYTRAPPED BOMBLET
A rock is placed under a bomblet to provide a solid base. An anchor
stake is driven into the ground on the opposite side of the tree trunk for
a tie down. The slip loops indicated in the drawing are loosed a pull on
either trip wire will cause the string loop to slide off the short cross bar.
This will allow the long bar to tip down, dropping the rock onto the exposed
striker of the bomblet.
DISARMING. Carefully remove the rock from the horizontal stake. Destroy
bomb in place.
222
n\
GRENADES BOARD
GRENADE LAUNCHER
223
GRENADE LAUNCHER
A hole is
shape. A TNT
of the hole .
ground • The c
top of the hoi
in thickness i
7 cm (3 inches
act to hold th
Lead wires are
the device is
dug 60 cm in diameter and 3/4 meter deep in a funnel
charge of approximately 3 pounds is placed in the bottom
The charge is capped and lead wires extend along the
harge is then tamped with dirt within four inches of the
e. A board 60 cm (24 inches) square and 5 cm (2 inches)
s placed over the hole. Nails are driven into the board
) apart and grenades are placed between the nails which
e spoons (handles) in place as the safety pins are pulled.
attached and run to a place of concealment, from which
command fired.
FUNCTIONING. When a helicopter is about 120 meters (approx. 130
yards) from the launchers, the charge is detonated. The grenades are
tossed from 120 to 150 meters into the air within a perimeter of 120
meters. The device is also used against troops.
224
FRICTION IGNITER
BLAST
DETONATOR
FRICTION PULL WIRE
BLASTING CAP
DETONATOR
EXPLOSIVE
CHARGE
FOUNTAIN PEN SABOTAGE DEVICE
225
FOUNTAIN PEN SABOTAGE DEVICE
This device is constructed from a fountain pen. It consists of an
explosive booster, two blasting caps, and two friction igniters. The
explosive components and ignition device are contained in the ink bladder
housing and in the cap of the pen.
FUNCTIONING. This device will explode if the cap is removed. Removal
of the cap will extract the friction pull wire from the friction cup in
the cap, bladder housing, or both, sending a flash into the detonators and
exploding the device.
DISARMING. DO NOT ATTEMPT TO DISARM THIS DEVICE. Destroy it in place
or notify explosive ordnance disposal personnel.
226
CIGARETTE LIGHTER
ASSASSINATION DEVICE
227
CIGARETTE LIGHTER ASSASSINATION DEVICE
This device looks like a common cigarette lighter sold commercially
in the Republic of Vietnam The explosive device is in the fluid com-
partment and is composed of a detonator and an explosive charge. The
detonator is cotton saturated with flammable powders and is placed on
the same level as the flint. The explosive is below it in the fluid
compartment .
FUNCTIONING. Striking the flint ignites the detonator which sets
off the explosive charge.
DISARMING. DO NOT ATTEMPT TO DISARM THIS DEVICE. Destroy it in
place or notify explosive ordnance disposal personnel.
228
VC BOOBYTRAP GRENADE
SAFETY PIN
BOOBYTRAPPFD
GRENADE
SAFETY P!N HOLE
— PIVOT POINT
REGULAR
GRENADE
229
VC BOOBYTRAP GRENADE
This is a manufactured boobytrap grenade that resembles a standard
fragmentation type hand grenade, except that the safety pin and the
pivot pin have been reversed. This grenade will detonate when the safety
pin is removed and pressure is applied to the handle .
230
TRIP WIRE
MACE
231
THE MACE
This device functions similarly to a pendulum. A rock % to l/3m
in diameter is armed with 80 to 100 sharpened punji sticks to create
a massive "pin cushion" or "mace." The armed rock is suspended about
nine meters high in the jungle canopy in the cocked position by a
single stick-and-vine trigger - The action is triggered when a taut
vine stretched across the trail is tripped. Movement of the trip wire
allows the stick-and-vine trigger to free the rock. Gravity does the
rest as the "mace" clears a wide swath in the jungle trail, killing
or wounding elements in the point squad.
232
BAMBOO ARCH
HAND GRENADE
233
BAMBOO ARCH
A grenade is secured at the top of a bamboo arch and a trip wire
is secured to the grenade. Any contact with the trip wire will detonate
the grenade. The location of the grenade achieves a large casualty
radius. At night, this is employed most effectively as a warning device.
During the day the trip wire is loosened from the ground and wrapped
around the bamboo arch to allow use of the path by the Viet Cong.
234
HAND GRENADE
TIN CAN
NSIDE
HELICOPTER TRAP
235
HELICOPTER TRAP
Bamboo poles are placed in the ground with a tin can attached to
the top of each pole. Hand grenades with safety pins removed are placed
inside the cans- Trip wires are attached to the grenades from one pole
to another in an "X" pattern The grenades drop to the ground and deton-
ate when a helicopter touches the trip wires.
■
236
FACE KNOCKING TRAP
237
FACE KNOCKING TRAP
This trap will hit and impale the victim's face. A wooden board
is fixed to each end of a 1i?ti long piece of wood. Spikes are planted
on one third (1/3) of its length (near the non-spiked board). Another
piece of wood passes through the hole. The board is placed at one end
of the trap opening. When the victim steps on the non-spiked board, it
will swing downward throwing the victim into the trap. At the same time,
the spiked board will be projected into the victim's face.
238
COMMAND DETONATION OR TRIPWIRED
SHAPED CHARGE
CAMOUFLAG
US SHAPED
CHARGE
WIRES FOR
COMMAND D
239
COMMAND DETONATION OR TRIPWIRED SHAPED CIL^RGE
A U.S. shaped charge which can be detonated on command or by trip-
wire is placed covering a trail. The shaped charge is tied to a tripod
slightly above ground and facing toward the trail. It is then detonated
on command from some distance away or by the tripwire placed in the line
of fire of the charge.
240
CIGARETTE PACK ANTIPERSONNEL BOMB
■TOP CLOSURE PLATE
ACID WELL
DELAY MEMBRANE
NITIATING COMPOUN
CHARGE (TNT)
241
CIGARETTE PACK ANTIPERSONNEL BOMB
This device has an outward appearance of a cigarette pack. It
employs acid, ball bearings and TNT.
FUNCTIONING. A metal container is placed inside a cagrette pack
and filled with a fuze and ball bearings. Acid is poured into the top
of the fuze and it eats away a delay membrane. When the acid meets the
initiation compound it detonates the compound and a booster explosive,
causing the main charge to detonate.
DISARMING. DO NOT DISARM. Place it under sandbags and allow it
to detonate.
242
GRENADE SABOTAGE DEVICE
This device is placed in the fuel tank of a vehicle. It consists
of a hand grenade wrapped in adhesive tape with the safety pin removed.
FUNCTION. The adhesive tape is wrapped around the handle of the
grenade. The safety pin is pulled and the grenade is put into the fuel
tank of a vehicle. The fuel in the tank softens the adhesive to the point
where the tension of the grenade handle will overcome the resistance of
the tape. The handle flies off and the grenade is detonated. Supplemental
coil springs are placed beneath the grenade handle to assist the fuze
spring in overcoming the resistance of the tape.
DISAEMING. DO NOT ATTEMPT TO DISAEM. Evacuate the area until the
grenade detonates .
243
VC/NVA MINE DETECnON CAPABILITY AND EQUIPMENT
CAPABILITIES. CHICOM manufactured mine detectors are in the
possession of NVA units in the Republic of Vietnam. Training docu-
ments indicate a reliance on the simpler methods of detection, such
as the use of picks, pick mattocks and various types of issued or
locally manufactured probes.
EQUIPMENT. Various types of Soviet equipment have been pro-
vided to Communist bloc countries since World War II, and we may
assume that some of these detectors have been acquired by the NVA
and possibly by the VC . The CHICOM equipment described in this book-
let is known to be in the possession of the NVA. The following types
of mine detectors are available:
1. US SCR 625. Possibly captured from the French. Capable
of detecting buried metallic mines to a depth of 13.8 inches.
2. CHICOM Type 55-625. Operation and phy-ical characteristics
similar to the Soviet VIM 203M.
244
3. SOVIET VIM 203M. Reported detection range up to 12 inches
for metallic mines
4. SOVIET VIM 625 and VIM 695. Estimated detectic-i range of
10 to 12 inches.
5. SOVIET VTM 210. Depending on type of mine, detection range
is from 9.5 to 19.5 inches.
6. Soviet "search spade" detector with a claimed range of up
to 10 feet.
245
SOVIET VIM 203M
The Soviet VIM 203M World War II metallic mine detector operates
on the beat frequency oscillation principle and employs two tubes.
Two models of this detector are in existence, one using a rectangular
search coil and the other using a circular coil. Both models are similar
in operation and can be mounted either on a search handle or a rifle.
However, the latest version of the circular model, described below,
is slightly heavier and has a higher "A" battery voltage, a longer con-
tinuous operating life (30 hours), and a reported detection range of
8 to 12 inches for buried metallic mines.
CHARACTERISTICS
Detector head assembly . . 15" diameter circular search coil; weight
14.5 lbs.
Search handle 6 ft, 3-section metal or wooden pole, or
a rifle.
Tuning box Contains two oscillator-amplifier tubes;
mounted on search handle.
246
Power supply Case contains an "A" battery of three 1.5-
volt dry cells and 60-volt "B" battery;
carried in haversack; weight, 11.9 lbs.
Controls Tone regulator located on tuning box.
Aural indicators Headphones.
Carrying case Disassembled detector packed in the same
haversack as the power supply.
Total weight 26.4 lbs.
247
MINE DETECTOR, VIM 203M (USSR)
SEARCH COIL
60-VOLT
BATTERY CASE DRY. CELL
1.5-VOLT (3)
BATTERY
CASE
COVER
248
CHICOM TYPE 55-625
The CHICOM mine detector is a copy of the Soviet VIM 203M mine
detector with the exception of weight and some dimensions. The oper-
ating characteristics are similar.
CHARACTERISTICS
Detector head assembly • . 13 5/8" diameter search coil; weight 2.5 lbs.
Search handle 59" long, 3-section wooden pole, or rifle;
weight, 1.5 lbs.
Tuning box Mounted on search handle; contains two tubes.
Power supply Case contains "A" battery of 1.5 volts and
a 60-volt "B" battery; carried in a pack;
estimated weight, 9.5 lbs.
Controls Tone regulator located on tuning box.
Carrying pack Holds power supply and disassembled detector.
Estimated total weight . . 15.75 lbs.
249
SOVIET VIM 625, MODEL 1942 and VIM 695, MODEL 1942
The World War Ilelectronic mine detectors, VIM 625 and 695, were
produced for the purpose of locating metallic mines. Both models are
identical. Although only one- tube circuits are used, a detection sensi-
tivity comparable to other Soviet detectors is claimed. In physical
appearance they are very similar to the Soviet VIM 203 detector. Both
detectors were designed to be mounted on rifles.
CH.\RACTERISTICS
Detector head assembly
Either rectangular or circular (15" dia )
rubber- insulated search coil; 13.2 lbs.
Search handle
Tuning box '
Rifle.
Mounted either on search handle or on de-
tector head assembly; one oscillator-ampli-
fier tube.
Power supply
Wet cell(s), 2.8 volts; dry cell, 60 volts;
11.2 lbs.; 10 hours continuous service.
250
A. TUNING-CONTROL KNOB ON
FACE OF TUNING BOX
MINE DETECTORS VIM 625
AND VIM 695, MODELS 1942
251
Controls Tone regulator is centered on side of
tuning box opposite to operator.
Aural indicators Headphones
Carrying case Contains the power supply and detector.
Total weight 24.4 lbs.
252
SOVIET VIM 210, MODELS 1939 and 1940
The World War II electronic mine detector VIM 210 was produced to
detect metallic mines. Both models work on the beat freqi'ency oscil-
lation principle. They are identical in their detection ranges, as
measured from the search coil to the exposed mine on the ground. The
ranges are: Metallic fuze, 2 inches; S-mine, 9.5 to 11.5 inches; teller-
mine, 17 5 to 19.5 inches. The major differences between the two models
are in the location of the tuning box, weights of batteries, and head
assemblies.
CHARACTERISTICS
Detector head assembly
Rectangular search coil 17.7" by 9.8";
16.8 lbs. (1939); 15.2 lbs. (1940).
Search handle
Tuning box
3- section aluminum rod or rifle.
Mounted either on detector head assembly or
on search handle; contains two oscillator-
amplifier tubes.
253
BATTERY
CASE
CONTROL
FROM
BOX DETACHABLE
BATTERY CASE
EADPHONES
HAND GRIPS ON
SEARCH ROD
BRACES FASTENED TO FACE
OF TUNING BOX
RIFLE
3-SECTIONAL
ALUMINUM ROD
SOCKET FOR
SEARCH
ROD OR
RIFLE
SEARCH COIL MUZZLE
B. TUNING BOX
MOUNTED ON
SEARCH COIL
MINE DETECTOR, VIM -210
MODELS 1939 AND 1940
(USSR)
254
Power supply
Controls
Aural indicators
Carrying case
Total weight
Case contains one 1.2-volt wet cell and one
60-volt dry cell; 8.4 lbs. (1939); 11.4 lbs.
(1940); continuous operating life, 24 hours.
On-off switch; tone regulator on tuning box.
Headphones .
2 haversacks for Model 1939, 1 for Model 1940.
Model 1939, 26.2 lbs.; Model 1940, 26.6 lbs.
255
SOVIET THREE-SEARCH-COIL TYPE
The three- search-coil electronic mine detector, v?hich came into
use about 1945, was produced to detect metallic mines. The detector
head assembly differs markedly in shape from that of other Soviet
mine detectors. It consists of three separate rectangular coils
arranged side by side. This detector cannot be rifle mounted, and the
tuning box, usually fastened to the search handle, may be carried in
the shoulder haversack.
256
LACK OF TUNING BOX
ON SEARCH COIL
TWO SMALLER COILS ON EITHER
SIDE OF THE LARGE RECTANGULAR
COIL
i
MINE DETECTOR
THREE SEARCH COIL TYPE
257
CHARACTERISTICS
Detector head assembly . • Three separate rectangular search coils
(two small coils mounted on either side
of a large coil) .
Search handle Sectional pole.
Tuning box Contains oscillator-amplifier tube(s)
and is located either on the search handle
or in the shoulder haversack.
Aural indicators Headphones.
258
SOVIET MINE DETECTOR WITH "SEARCH SPADE"
This mine detector, equipped with a spade shaped head, makes a
definite departure from the appearance of conventional Soviet detectors
which employ either a circular or rectangular search head. The detection
range for buried metallic objects is claimed to 10 feet, which is most
likely exaggerated. But with allowances made, the claim would tend to
indicate that this detector has a greater range than other known Soviet
detectors.
CH^vRACTERISTICS
Detector head assembly . . Overall dimensions, 11.8 by 8.3 inches; con-
sists of a perforated aluminum tube 11.8"
long and 1.5" in diameter and two folding
plates of aluminum. A neon tube serves as
a control lamp in the perforated aluminum
tube.
Search handle 2-section 79" hollow bamboo rod.
Tuning box Consists of tube attachment at top of search
handle, 27.2" long and 4" in diameter; cir-
cuit contains one oscillator-amplifier tubeo
259
RADIO TUBE ANTENNA
HEADPHONES
STRAP
PLUG
DOUBLE CABLE
CARRIED INSIDE
HOLLOW BAMBOO
POLE
BAMBOO ALUMINUM
POLE SHEETS & TUBE
^
mm
BATTERY
KIT
HANDLE SEARCH
ROD
SEARCH-
SPADE
SOVIET MINE DETECTOR
WITH "SEARCH SPADE"
260
Power supply Battery kit with carrying straps; contains
one 90-volt dry cell and one 6-volt wet cell.
Controls Plugs for attached headphones and search rod
on side of battery kit.
Aural indicators Headphones.
261
GLOSSARY
Anti-lift device - A mechanism used in boobytrapping that fires an explo-
sive when the primary object is lifted.
Anti-tilt device - A mechanism used in boobytrapping that fires an explo-
sive when the primary object is tilted.
Area clearance - A non-combat operation involving the removal or destruc-
tion of mines and boobytraps, normally taking place after enemy forces
have been driven from the area.
Arming - The removal of safety devices or preparation of firing mechan-
isms so that an explosive device is changed from a safe condition to a
state of readiness to explode.
Blasting cap - A small, thin -walled cylindrical case containing a sensi-
tive explosive such as mercury fulminate or crystalline PETN. It is used
as a detonator to set off another explosive charge. There are two types
in military use, one fired by an electrical current and the other fired
by flash from a safety fuse or percussion cap.
Booster - A high explosive element, sufficiently sensitive to be actuated
by a small explosive element in a fuze or firing device, and powerful
enough to cause detonation of a main explosive charge.
De fuzing - Removing a fuze or firing device from a mine or boobytrap.
262
Delay element - A device installed in a fuze or firing device to delay
firing.
Detonator - A high explosive element used in an explosive train to create
or transmit a detonation wave to a booster or to a main charge of high
explosives.
Disarming - Making explosive items safe by proper replacement of all
safety devices or by removal of fuzes or other initiating elements.
Firing device - A mechanism used to initiate a train of fire or detonation
in boobytraps, mines or demolition charges- It is generally a separate
item of issue. When fitted with a non-electrical blasting cap it may be
used as a mine fuze or anti-lift device or to set off prepared explosive
charges.
Fuse (time or safety) - A flexible, waterproofed fabric tube containing
a filler of black powder that transmits a flame to fire an explosive
charge or non-electric blasting cap. Burning slowly at a uniform rate,
the safety fuse allows a person firing a charge to reach a safe place
before detonation occurs.
Fuse lighter - A device used to ignite a safety fuse.
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